EXHIBIT 10.11


                         CORPORATE AGREEMENT NO. 92-019

                                 by and between

                            TOREX SEMICONDUCTOR LTD.

                                       and

                       NATIONAL SEMICONDUCTOR CORPORATION

This Agreement is made and entered into the 20th day of February, 1992, by and
between National Semiconductor Corporation, with its principal place of business
at 2900 Semiconductor Drive, Santa Clara, California (hereinafter referred to as
"NSC"), and Torex Semiconductor Ltd., with its principal place of business at
3833 Kinoko, lbara, Okayama 715, Japan, (hereinafter referred to as "SELLER").
NSC and SELLER may be referred to herein as a PARTY or the PARTIES, as the case
may require.

1.    SCOPE

The purpose of this Agreement is to establish the terms and conditions under
which SELLER will sell to NSC Discrete Semiconductor dice and/or wafers and will
consider the purchase of other semiconductor materials and piece parts
"Products". This Agreement does not constitute an order. NSC Purchase Orders
will be required to purchase any Products from SELLER.

2.    SPECIFICATIONS

SELLER shall manufacture and supply all Products listed on Attachment I and, for
those Products, SELLER shall meet all specifications established in Attachment
II. As newer and more advanced designs and materials are developed by SELLER
that improve the performance or cost effectiveness of the Products, SELLER shall
so advise NSC in writing and, upon NSC's written agreement, the specifications
established in Attachment II may be amended.

NSC retains the right to make changes in the specifications that may be required
by changes in the marketplace or to effect improvements in the Products. In the
event this right is exercised by NSC, the direction shall be in writing by the
Product Line Director and/or the Director of Purchasing. SELLER shall take
immediate action to incorporate such changes in the Products as soon as
possible. It such changes are directed, price(s) and time of performance may be
equitably adjusted.

                                                                          Page 2


3.    TERM.

The term of this Agreement shall be effective as of the first delivery of
qualified product per NSC's Qualification Notices under this Agreement
(____________, 1992) and shall continue thereafter for a period of three (3)
years, followed by a two (2) year renewal period with price renegotiation,
unless terminated earlier as otherwise provided herein. After the initial five
year term (three years with fixed price plus two years with renegotiated price),
the Agreement shall be automatically renewed for additional two year periods
with price renegotiation unless either PARTY gives at least 90 days written
notice of its intent to cancel. Conditions for price renegotiation are found in
Paragraph 4, Price and Payment.

Except as otherwise provided in this Agreement, upon termination of this
Agreement, the PARTIES shall complete performance of all purchase orders issued
and released prior to the effective date of termination, but this involuntary
period of purchase order completion is limited to 6 months, maximum, from date
of termination.

4.    PRICE AND PAYMENT.

SELLER shall sell the products listed in Attachment I to NSC at the prices
specified therein.

Prices are firm (BASE PRICES) for a period of three years as listed on
Attachment I. Prices in years four and five will be renegotiated six months
prior to the end of the third year.

In the renegotiation, both PARTIES shall come together and negotiate necessary
price adjustments by taking into consideration all factors that may have impact
on the benefits of either PARTY. Examples of potential factors include, U.S.
Dollar/Yen exchange rate, material costs and results of continuous improvement
programs.

The PARTIES agree to bring this information forward into the negotiation and in
good faith make any necessary price adjustments that will be consistent with our
goal to nurture the benefits of this relationship for both PARTIES.

Both PARTIES shall agree upon price for years four and five no later than two
months prior to the beginning of the first period of year four. If price
agreement cannot be made between the two PARTIES for the remaining two year
period of the Agreement, then this Agreement will terminate per the terms of
Section 3 and Section 22 of this Agreement.

Payment Terms:  DA 20 days

All invoices shall identify the purchase order number, vendor number, NSC part
number, blanket order line and release number, item description and quantity.
Multiple purchase order numbers or release numbers cannot he combined on the
same invoice.

Invoices will be sent to the accounting offices specified on each purchase
order.

                                                                          Page 3


5.    QUANTITIES

Quantities indicated on Attachment I are a portion of the total quantities
anticipated to be required based upon NSC plans as of the date of negotiations.
These quantities are subject to change based upon changing economic conditions.

As market conditions change such that NSC's sales plans are reduced or increased
in total, quantities procured under this Agreement will adjusted upward or
downward in accordance with the proportion that the original Agreement quantity
represents. Any additional materials or Products purchased from SELLER during
the term of the Agreement which reference this Agreement will be subject to the
terms and conditions of this Agreement.

Minimum electrical yield for diodes and transistors are stated on Attachment I.

6.    ORDERS

Specific Purchase orders for Products purchased under this Agreement will be
issued by NSC. Order(s) will reference this Agreement, identify quantity
ordered, specify delivery point(s) and provide an order number of billing
purposes.

7.    SCHEDULING

No later than one week before each NSC fiscal accounting period begins (each
period is 4 or 5 weeks), NSC shall provide SELLER with a rolling forecast per
NSC fiscal year calendar (attached). The period based forecast will commit for
six (6) periods, with a firm quantity commitment for three (3) periods rolling
and a firm quantity by device commitment for five (5) weeks rolling on a firm
weekly requirements basis. SELLER shall confirm acceptance of the forecast
within 5 working days of receipt.

Within the guidelines of the firm forecasting commitments set forth above, NSC
may without cost or liability, reschedule delivery or cancel any product upon at
least 5 weeks notice prior to the originally agreed scheduled delivery date.

8.    LEADTIMES

SELLER agrees that leadtime on new orders shall not exceed 4 weeks, ex-factory,
for the initial order.

9.    ADDITIONAL SERVICES

OFFICE SERVICES: In the event that business levels require additional support
from NSC, it may be necessary from time to time for NSC, with SELLER's consent,
to place several employees at SELLER's manufacturing location to coordinate
various functions such Quality Control, Scheduling, or Engineering Liaison.

                                                                          Page 4


PROGRESS REVIEW: With SELLER's consent, NSC, shall have the right to enter
SELLER's premises during reasonable hours and on reasonable notice to inspect
the premises and to determine compliance with all requirements of the Agreement.

CUSTOMER SUPPORT: If requested by NSC SELLER will support discussions with NSC
customers or potential customers only if accompanied by NSC personnel and will
admit such customers to SELLER's manufacturing facilities for such purposes as
quality audits, engineering development and other special requests.

PRODUCT DEVELOPMENT: Both PARTIES agree to use best efforts to develop, design
and manufacture such new products as required to meet NSC customer requests.

QUALIFICATION:  See Attachment IV.

PACK SPECIFICATION: Bulk package carton box and transmission order entry - see
Attachment V.

10.   TECHNOLOGICAL/ECONOMIC OBSOLESCENCE

NSC reserves the right to reduce estimated quantities or to substitute new
products for those contained in Attachment I in the event that similar new
materials or products offering a superior technological or economic advantage
become generally available during the term of this Agreement.

SELLER shall be given a mutually agreed reasonable amount of time to match such
new material or products.

11.   WARRANTIES

SELLER warrants that all products manufactured by SELLER and sold to NSC under
this Agreement shall, for a period of 12 months after delivery to NSC specified
in Section 8, be free from defects in workmanship and materials and meet and
conform to the specifications specified in Attachment II to the Agreement or
such other specifications as may be agreed to from time to time as evidenced by
written agreement signed by the PARTIES. SELLER further warrants that the
Products are of merchantable quality and are fit and suitable for the purpose
agreed upon by both PARTIES. These warranties are in addition to all other
warranties, express or implied, and shall survive delivery, inspection,
acceptance or payment by NSC and shall run to NSC, its successors, assigns,
customers and users of the products.

Any changes or waivers of any of the accepted specifications must be approved in
advance in writing by NSC and SELLER. Any SELLER invoice for SELLER products
implementing a change in the applicable specifications made by SELLER without
the advance written approval of NSC will not be authorized for payment and will
be subject to rejection.

                                                                          Page 5


All products sold by SELLER under this Agreement shall have lot number
traceability. A "lot" is defined as wafers manufactured in one homogenous
diffusion run.

In the event that NSC finds the products delivered do not meet the warranties
specified herein or are defective, NSC shall notify SELLER in writing of the
claims. SELLER shall have the right to confirm the defects. If SELLER accepts
the claims NSC may, at its sole discretion, (i) require SELLER to promptly
correct, at no cost to NSC, any defective or non-conforming Products by repair
or replacement at a location specified by NSC; or (ii) return such defective or
non-conforming Products at SELLER's expense to SELLER and recover from SELLER
the price thereof.

12.   PROCESS CHANGES

After SELLER's process(es) for fabricating Products sold under this Agreement
has been qualified by NSC, that process(es) shall remain unchanged. Attachment
III specifies the base line process(es) (manufacturing configuration) which can
only be changed by following the procedures set forth in this Section. In
addition, SELLER shall follow the procedures and rules set forth in Attachment
IV to ensure the reliability of the Products sold by NSC under this Agreement.
SELLER's conformity to the qualified processes is intended to ensure that SELLER
satisfies the intent of Section 2 of NSC SOP-3-273, a copy of which has been
provided to SELLER for reference purposes. Process changes proposed by SELLER or
required by NSC to remedy reliability problems shall be implemented as follows:

a)    SELLER will provide NSC with written notice of the proposed process
      change, accompanied by appropriate data to support the change.

b)    NSC will have ten (10) working days to accept or reject the proposed
      change in writing.

c)    If NSC accepts the proposed change, the modified process shall become the
      qualified base line process and SELLER shall, through lot traceability,
      identify the Products processed under the modified process, with NSC
      having the right at its sole discretion to require requalification of
      SELLER Product where there has been a major process change.

d)    If NSC rejects the proposed change or fails to respond to a change
      proposed by SELLER within the said ten (10) working days, NSC is deemed to
      have rejected a process change, and SELLER shall continue to manufacture
      for NSC hereunder using the original qualified base line process.

e)    In the event of unacceptable yields and/or other reliability problems,
      SELLER accepts the responsibility to implement process changes that are
      acceptable to NSC (and approved by NSC), and believed by NSC and SELLER to
      be able to remedy the unacceptable yields and/or the reliability problem.
      SELLER agrees to target a 30 day maximum time to achieve the needed
      changes.

                                                                          Page 6


13.   NSC SUGGESTIONS AND APPROVALS

In the event that NSC makes any written ECN/PCN type change suggestions to
SELLER concerning specifications, designs, drawings, features, or the like with
respect to products covered by this Agreement, SELLER will not be relieved of
any of its obligations under the Agreement unless SELLER notifies NSC in writing
that implementation of said suggestions render it impossible for SELLER to
comply with its obligations hereunder. Both PARTIES agree that any and all
change requests shall be acted upon by SELLER only if such suggested change is
in writing and cost impacts have been evaluated.

When NSC makes a written change request and such request is accepted by SELLER
in writing, such change is assumed to be a written amendment to this Agreement,
executed by both PARTIES. Any cost impact will be negotiated and agreed to by
both Parties prior to implementation of such change.

NSC's apparent approval of any specification, design, drawing, or the like
submitted by SELLER shall not relieve SELLER of any of SELLER's obligations
hereunder unless such relieved obligation has been covered by a written
amendment to this Agreement executed by both PARTIES. Such written amendment
shall include agreement on price impact, if any.

14.   ACCEPTANCE

All Products delivered by SELLER, specified in Section 8, shall be inspected by
NSC within a reasonable time after delivery. If NSC has not rejected a delivered
Product lot in writing within 20 working days after receipt of the Product by an
NSC Using Location, then such lot shall be deemed to have been accepted by NSC.

NSC may, at its option, reject part or all of any shipment delivered by SELLER
under this Agreement, if both PARTIES agree that the Products fail to meet the
applicable specifications. To ensure an orderly handling of Products rejected by
NSC, NSC shall request and SELLER shall issue an RMA before Products are
returned to SELLER for credit.

All rejected Products pursuant to this section will be shipped to SELLER after
receipt of RMA by NSC, freight collect.

15.   CONFIDENTIALITY

Either PARTY agrees that certain information furnished to it by the other PARTY
under this Agreement, which if furnished in writing or other tangible form and
marked as being confidential, or if orally or visually disclosed is then reduced
to writing and identified as being confidential and such writing is provided to
the receiving PARTY within thirty (30) days after such oral or visual
disclosure, shall be considered to be the Confidential Information of the
transferring PARTY. The receiving PARTY agrees that it will maintain the
Confidential Information of the transferring PARTY in strict confidence
utilizing at least the same degree of care utilized by the receiving 

                                                                          Page 7


PARTY to protect its own Confidential Information of similar nature and will not
reproduce the transferring PARTY's Confidential Information or disclose it to
any third party or to employees not having a need to know.

SELLER shall have the right to use the NSC Confidential information disclosed or
transferred hereunder only at its facility in lbara, Okayama, Japan, and only
for the purpose of manufacturing products of the types listed in Attachment I
for delivery only to NSC pursuant to this Agreement.

The obligations of confidence and use set forth in this Section 15 shall impose
no obligation upon the receiving PARTY with respect to any Confidential
Information which:

a)    is now, or subsequently becomes generally known or available; or

b)    can be shown by receiving PARTY to have been in its possession prior to
      receipt of same from the transferring PARTY; or

c)    is subsequently rightfully furnished to the receiving PARTY by a third
      party without restriction on disclosure; or

d)    is furnished by the disclosing PARTY to a third party without a
      restriction on disclosure; or

e)    is independently developed by the receiving PARTY provided the person or
      persons developing same have not had access to the Confidential
      Information of the transferring PARTY.

SELLER acknowledges that SELLER understands and agrees that it is expressly
prohibited from revealing to any third party that SELLER is conducting business
or discussions related to this Agreement, or the terms and conditions hereof,
without the prior written approval of NSC.

The obligations set forth in this Section 15 shall survive the termination of
this Agreement by two years.

All Confidential Information of a PARTY in the possession of the other PARTY
disclosed or transferred under this Agreement shall be returned within thirty
(30) days after the expiration or earlier termination of this Agreement.

16.   TECHNICAL SUPPORT AND DEVELOPMENTS

NSC agrees to provide reasonable technical support at NSC's expense to SELLER,
in lbara, Japan, to assist SELLER in meeting NSC's specifications.

SELLER agrees to provide reasonable technical support at SELLER'S expense to
assist NSC on yield, reliability and packaging issues related to SELLER's
products as produced for NSC, such technical support being made available in
Cebu, Philippines and in Santa Clara, USA.

                                                                          Page 8


17.   INDEMNIFICATION AND LIMITATION OF LIABILITY

SELLER shall at all times indemnify and hold harmless NSC, its agents and
employees against all suits, claims, liabilities, damages, losses, costs or
other expenses, including attorneys' fees, relating to injuries or damages
alleged to have resulted from SELLER's negligence or any defective Product
supplied under this Agreement. SELLER will have no such obligation to the extent
that any such injury or damage is due solely and directly to NSC's negligence.

NSC shall at all times indemnify and hold harmless SELLER, its agents and
employees against all suits, claims, liabilities, damages, losses, costs or
other expenses, including attorneys' fees, relating to injuries or damages
alleged to have resulted from NSC's negligence or NSC's handling or selling of
any Product delivered to NSC by SELLER. NSC will have no such obligation to the
extent that any such injury or damage is due solely and directly to SELLER's
negligence.

SELLER hereby agrees to indemnify NSC against and save it harmless from all
liability, claims or demands made by any of SELLER's officers or employees
(including former officers or employees) on account of or by reason of or
growing out of the performance of this Agreement.

NSC hereby agrees to indemnify SELLER against and save it harmless from all
liability, claims or demands made by any of NSC's officers or employees
(including former officers or employees) on account of or by reason of or
growing out of the performance of this Agreement.

NSC shall not be liable to SELLER for any cancellation penalties, excluding ones
resulting from cancellation of firm order Work In Process charges, or any other
amounts to compensate SELLER for lost profits or opportunities, so long as NSC
pays for accepted Products from SELLER at the prices, in quantities and under
terms that are consistent with this Agreement.

Except as otherwise specifically provided in this Agreement, neither PARTY shall
be liable for any incidental or consequential damages arising out of said
PARTY's performance or non-performance of this Agreement.

18.   INDEPENDENT CONTRACTORS

SELLER is deemed to be at all times an independent contractor for all purposes
and agrees to carry all worker's compensation and other insurance necessary
under Japanese laws and accepts exclusive liability for all payroll taxes or
contributions imposed by Japanese laws with respect to its officers and
employees.

19.   NSC'S PURCHASE ORDER

The terms and conditions of NSC's purchase orders issued and released pursuant
to this Agreement shall be a part hereof. In the event there is a conflict
between the terms and conditions of NSC's purchase order and the terms and
conditions of this Agreement, the terms and conditions of this Agreement shall
prevail.

                                                                          Page 9


20.   FORCE MAJEURE

Neither PARTY shall be liable for any inability to comply with the provisions of
this Agreement due to causes reasonably beyond its control. These causes shall
include, but are not limited to, fire, flood, earthquake, explosion, accident,
acts of public enemy, war, labor disputes, transportation, embargoes, or
failures or delays in transportation, acts of God, acts of any government, or
any agency or department thereof or judicial action. The PARTY whose performance
is affected by such a cause shall promptly notify the other PARTY hereto of such
impossibility of performance. If such nonperformance continues in effect for
more than ninety (90) days, the other PARTY may, at its option, terminate this
Agreement without further cause or liability. Otherwise, this Agreement shall
continue in full force and effect for the remainder of its term upon cessation
of such event of force majeure.

21.   ASSIGNMENT

Neither PARTY may assign its rights or obligations under this Agreement without
the prior written consent of the other PARTY and any attempted assignment will
be void.

22.   TERMINATION

Either PARTY may terminate this Agreement immediately in the event that either
PARTY is the subject of a petition filed in Bankruptcy court of the United
States or Japan, whether voluntary or involuntary, if a Receiver or Trustee is
appointed for all or a substantial portion of the assets of either PARTY, or if
either PARTY makes an assignment for the benefit of its creditors.

23.   PARAGRAPH TITLES

The paragraph titles herein are intended for convenience only and shall not be
construed to alter either PARTIES' obligations or rights as otherwise set forth
herein.

24.   EXPORT CONTROL

Each PARTY represents and warrants to the other PARTY that unless such prior
authorization is obtained from the United States Government, such PARTY shall
not knowingly:

a)    Export or re-export, directly or indirectly, any technical data (as
      defined in Part 379 of the Export Administration Regulations of the United
      States Department of Commerce) received from the other PARTY hereunder; or

b)    Disclose such technical data for use in export or re-export directly or
      indirectly, any direct product of such technical data, to any destination
      or country to which the export or re-export or release of technical data
      or export or said re-export of products of technical data is prohibited by
      the laws or regulations of the United States. These assurances are

                                                                         Page 10


      furnished by each PARTY in compliance with Part 379 (Technical Data) of
      the Export Administration Regulations of the United States Department of
      Commerce.

25.   GOVERNING LAW AND ARBITRATION

All disputes arising in connection with this Agreement shall be settled amicably
through good faith negotiations In the event no agreement can be reached, all
disputes shall be submitted to arbitration in San Jose, California before and
under the rules of the American Arbitration Association. The arbitrator's
decision shall be final, conclusive, and binding, and judgment on any
arbitration award or decision may be entered in any court of competent
jurisdiction.

The PARTIES agree that after arbitration the State of California shall have
jurisdiction to determine the validity, construction and performance of this
Agreement and the legal relations between the PARTIES. All disputes are subject
to venue of the State (Santa Clara County) and Federal (Northern District of
California) courts in California, and the PARTIES consent to the personal and
exclusive jurisdiction and venue of those courts.

26.   BINDING, EFFECT

This Agreement shall inure to the benefit of and be binding upon the PARTIES
hereto and their subsidiaries, successors and assigns.

27.   ENTIRE AGREEMENT

This Agreement, including all other documents incorporated by reference and
those attached hereto as Attachments, expresses the entire understanding of the
PARTIES hereto and cancels and supersedes any previous agreements,
understandings or representations between the PARTIES relating to the subject
matter hereof. This Agreement may not be modified except in a writing signed by
an authorized officer or representative of each PARTY.

28.   SEVERABILITY

If any provision of this Agreement is held invalid, the remaining provisions
shall remain valid and in force, unless such invalidity would frustrate the
purpose of this Agreement.

29.   NOTICES

Any notice to be given under this Agreement shall be in writing and shall be
sent to the appropriate PARTY at the address first stated in this Agreement, or
to such other address as a PARTY may later designate in writing to the other.
Notices shall be deemed to have been adequately sent and delivered when received
by the appropriate PARTY, after having been deposited in the mail (registered or
certified), postage prepaid.

30.   PUBLICITY

                                                                         Page 11


Neither PARTY shall publicize or otherwise disclose the terms of this Agreement
without the prior written approval of the other PARTY, which approval shall not
be unreasonably withheld.

31.   WAIVER

No failure or delay on the part of either PARTY in the exercise of any power,
right or Privilege arising hereunder shall operate as a waiver thereof, nor
shall any single or partial exercise of any such power, right or privilege
preclude other or further exercise thereof or of any other right, power or
privilege.


NATIONAL SEMICONDUCTOR                    TOREX SEMICONDUCTOR LTD.
CORPORATION


/s/                     3/12/92           /s/                     3.20/92
- --------------------------------------    -----------------------------------
Signature               Date              Signature               Date


Thomas P. Welch-Director of Technology    Makatsu Uchiyama-Managing Director
- --------------------------------------    -----------------------------------
Name (Printed)          Title             Name (Printed)          Title


/s/                     3/12/92           /s/
- --------------------------------------    -----------------------------------
Approved By             Date              Approved By             Date


R.E. Belcher-Discrete Division            Hiroshi Norigo-President
- --------------------------------------    -----------------------------------
Name (Printed)          Title             Name (Printed)          Title


                                LETTER OF INTENT

THIS LETTER OF INTENT is dated _______________ of August, 1991, by and between
NATIONAL SEMICONDUCTOR CORPORATION, a Delaware Corporation, having a principal
place of business at 2900 Semiconductor Drive, Santa Clara, California
95052-8090 (hereinafter "NSC") and THINK-O ELECTRIC COMPANY, a Japanese
corporation, having a principal place of business at 150 Kinoko, Ibara-City,
Okayama, 715 Japan (hereinafter "TEC"). NSC and/or TEC may be referred to herein
as a "party" or the "parties" as the case may require.

                                   WITNESSETH:

      WHEREAS, NSC and TEC have entered into preliminary discussions concerning
the creation of a business relationship between the parties; and

      WHEREAS, NSC and TEC desire to record and memorialize the substance of
those discussions in order to construct a framework from which a final binding
agreement can be negotiated.

      NOW, THEREFORE, in furtherance of the premises the parties hereto set
forth the following:

1.    NSC shall purchase discrete semiconductor dice and/or wafers, and will
      consider the purchase of other semiconductor materials and piece parts,
      from TEC on a preferred supplier basis.

2.    TEC shall supply such materials to NSC as a preferred customer with
      special pricing and guaranteed production capacity.

3.    Should TEC discrete semiconductors be successfully qualified by NSC and
      should the parties agree on price, quality, delivery and other terms and
      conditions of sale, then NSC shall agree to commence purchasing a minimum
      of Five Thousand (5,000) wafers, or dice equivalent, per month from TEC.
      Since the parties acknowledge that NSC requirements for discrete
      semiconductors may increase during the two year period following the
      signing of a final agreement by the parties, TEC agrees that it shall, at
      NSC's request, make available to NSC up to Fifteen Thousand (15,000)
      discrete semiconductor wafers per month. Depending upon TEC performance
      and semiconductor market conditions, the parties agree that this schedule
      can be extended and that the quantity of wafers to be 


      delivered thereunder can be increased up to Twenty Thousand (20,000) or
      more per month.

4.    The parties agree to cooperate and take all reasonable steps necessary to
      resolve any problems that may arise with regard to performance, price,
      quality or delivery.

5.    The initial prices to NSC for TEC wafers shall be follows:

                                                                       Bias
 Combined Total                                          Finished    Resistor
  Wafers/Month       Diodes      Zeners      Trans.       Trans.      Trans.
  ------------       ------      ------      ------       ------      ------

   4,000-9,999       $65.00      $80.00      $85.00       $95.00      $92.00
  10,000 & Up        $60.00      $76.00      $85.00       $95.00      $87.00


      Diode and zener prices do not include front bump or back metal. Transistor
      prices do not include back metal, but shall sample probing. All prices
      include production masks and incidental tooling expenses. NSC shall supply
      mask masters. The listed prices are also based on yields of Ninety-eight
      (98%) percent for diodes and Ninty-five (95%) percent for transistors.

6.    Initial deliveries by TEC shall be four (4) weeks after receipt of order.
      Following deliveries will be based upon a four (4) month rolling forecast
      supplied by NSC and updated monthly.

7.    The parties agree to review pricing annually.

8.    This Letter of Intent shall not be a binding commitment upon either party,
      but shall instead serve as a basis for good faith negotiations between NSC
      and TEC leading to a final binding contract. The parties agree to strive
      to execute such a contract not later than September 30, 1991.

9.    The final contract shall be administered on behalf of TEC by Torex
      Semiconductor LTD., TEC's international operations management company.

10.   Neither party shall publicize or otherwise disclose the terms of this
      relationship, this Letter of Intent, or the final agreement, without the
      prior written approval of the other party.

            IN WITNESS WHEREOF, the parties have had this Letter of Intent
executed by their respective authorized officers on the day and date first
written above.

THINK-O ELECTRIC COMPANY                NATIONAL SEMICONDUCTOR CORPORATION



By:/s/                              By:/s/
      ---------------------------         --------------------------------

Title:___________________________   Title ________________________________


                                  ATTACHMENT II


                            ELECTRICAL SPECIFICATIONS


1.0   SCOPE: This covers all diodes made by Torex Semiconductor Ltd for the
             National Semiconductor Corporation Discrete facility in Cebu, 
             Philippines.

2.0   PAPERWORK

      2.1   The paperwork sent with the run should state the device, its
            revision letter, the lot number and quantity of wafers being
            shipped.

      2.2   The test results of wafers in the lot tested at Torex's sample test
            should be included in the shipment with the run.

3.0   SAMPLING PLAN

      3.1   Oxide thickness (section 4.1) should be measured on 20% of the lot
            to verify it is within spec.

      3.2   The Gross Visual Inspection (section 4.2) should be done on all of
            the wafers in the lot.

      3.3   The Fine Visual Inspection (section 4.3) should be done on 20% of
            the wafers in the lot.

            3.3.1 Inspect five (5) spots per wafer, five (5) die per spot. (see
                  Figure 1)

            3.3.2 Accept/Reject Criteria

                  If one or more die in a spot is rejected, then the spot is
                  rejected.

                  If 3 or more spots are rejected, then the wafer is rejected.

                  If the total number of spots rejected exceeds the number of
                  wafers inspected, the lot is rejected.

4.0   VISUAL INSPECTION CRITERIA

            This inspection does not include the outer 1/8 inch area from the
            edge of the wafer.

      4.1   Oxide Thickness


            All diodes should have an oxide thickness greater then 6500
            Angstroms.

4.2   Gross Visual Criteria

      4.2.1 Fringing

            The wafer surface should not show more then two distinct fringes of
            color. This would indicate a possible overetch or passivation
            problem.

      4.2.2 Contamination

            Foreign material, pits, voids or stains on the wafer surface is
            rejectable.

      4.2.3 Discoloration

            Any abnormal coloration on the frontside of the wafer is rejectable.

      4.2.4 Warpage

            Any warpage that makes it impossible to mount the wafer on a flat
            surface is rejectable.

      4.2.5 Scratches

            Any wafer showing a scratch that is greater then 2 inches in length
            on the front of the wafer is rejectable.

      4.2.6 Broken Wafers

            Only whole wafer or a wafer with a piece missing from the edge of
            the wafer that is less then the length of the major flat is
            shippable.

      4.2.7 Mixing


            Wafers of different device types can not be shipped in the same
            container.

4.3   Fine Visual Criteria - done at 100X magnification

      4.3.1 Misalignment

            The contact mask should be 100% within the 2nd mask. (see Figure 2)

            75% of the contact window should be covered by metal. (see Figure 3)

      4.3.3 Mask/Oxide Reject

            No more then 10% of the space between the contact and the junction
            can be etched away. (see Figure 4)

      4.3.4 Nitride in Contact Area

            No residual nitride should be left in the contact opening.

      4.3.5 Pinholes

            Any pinholes in the active area starting from the PCCO is
            rejectable.

      4.3.6 Cracks

            Any cracks that touches the inner boundary of the PCCO on the die is
            rejectable.

      4.3.7 Other

            Any area with a defect other then those defined above including
            evidence of damage, improper or non-standard processing shall be
            held at Torex for review with Cebu and/or SC engineering for
            disposition prior to shipment.


                                    [ CHART ]



      5 spots per wafer
      5 die per spot


                                   [ FIGURES ]


               Accept             Accept             Reject              Reject


Figure 2 - METAL COVERAGE FOR 1EB; 1HB, 1LB, 1PC, 1TB


                                   [ FIGURES ]


            Accept                     Accept                     Reject
        100% coverage               75% coverage                 Less then
                                                                  coverage


FIGURE 3 - MASK/DIODES DEFECTS


                  PCCO              [   FIGURE   ]             [   FIGURE   ]
             Contact Area
               Junction
             Depletion Region                                      Defect


1.0   SCOPE:      This covers all transistors made by Torex Semiconductor
                  Ltd for the National Semiconductor Discrete facility
                  in Cebu, Philippines.

2.0   PAPERWORK:

      2.1   The paperwork sent with the run should state the device, its
            revision letter, the HFE bin target, the lot number and the quantity
            of wafers being shipped.

      2.2   The sample test results of the lot should be included in the
            shipment with the lot.

3.0   SAMPLING PLAN

      3.1   Inspect all of the wafers in the lot for Gross and Fine defects as
            defined in sections 4.1 and 4.2.

      3.2   For the Fine Visual Inspection, the sampling plan
            is:

            5 areas per wafer, 21 die per area
            Accept/Reject     =     1/2
            Quality level     =     5% LTPD

4.0   VISUAL INSPECTION CRITERIA

            This inspection does not include the outer 1/8 inch area from the
            edge of the wafer.

      4.1   Gross Visual Criteria - done with the unaided eye

            4.1.1 Contamination

                  Foreign material, pits, voids or stains on the wafer surface
                  is rejectable.

            4.1.2 Discoloration

                  Any abnormal coloration on the frontside of the wafer is
                  rejectable.


            4.1.3 Warpage

                  Any warpage that makes it impossible to mount the wafer on a
                  flat surface is rejectable.


                                                            PG 2/5 - TRANSISTORS

            4.1.4 Scratches

                  Any wafer showing a scratch that is greater then 2 inches in
                  length on the front of the wafer is rejectable.

            4.1.5 Broken Wafers

                  Only whole wafer or a wafer with a piece missing from the edge
                  of the wafer that is less then the length of the major flat is
                  shippable.

            4.1.6 Mixing

                  Wafers of different devices types can not be shipped in the
                  same container.

      4.2   Fine Visual Criteria - done at 100X magnification

            4.2.1 Oxide Rejects

                  4.2.1.1     The absence of oxide which allows the connection
                              of metal to an area not designated by design.

                  4.2.1.2     The contact oxide cut is not continuous or has
                              been reduced by more than 50% of its intended
                              design.

                  4.2.1.3     Pinholes or voids which expose silicon in the
                              active area of the die.

                  4.2.1.4     Any irregular shapes, fingers, spikes, etc on the
                              diffusion line which depart from the design by
                              more then 50% of the distance to the next
                              diffusion is rejectable.

                  4.2.1.5     Any continuous multiple spike that is
                              representative by a corrugated diffusion


                              line is rejectable.

            4.2.2 Masking Rejects

                  4.2.2.1     More then 50% of the design contact cut is not
                              covered by metal and is exposing silicon.

                  4.2.2.2     Any fault that reduces the designed diffusion
                              opening by more than 50%.

                  4.2.2.3     Contact oxide cut criterion:

                              For overlay devices:  Pr 21M, 22P, 23U, 25P,
                              42P, 43W, 47J, 49I, 65L, 66R, 75H

                              The edge of the contact cut must not be coincident
                              with the diffusion line.

                        For non-overlay devices: Pr 05R/S, 06F, 07U, 10K, 1If,
                        12R, 13N, 16J, 19T/U, 28C, 36M, 37J, 38J, 39J, 61H, 62M,
                        63W, 67M, 68K, 69M, 70J, 74L, 76K, 77J, 79L, 4PP, 4QJ,
                        5PJ, 5QL

                              Any masking misalignment which reduces the
                              distance between the contact oxide cut and the
                              diffusion line to less than 50% of the designed
                              separation is rejectable.

            4.2.3 Metallization Rejects

                  4.2.3.1     Scratches in the metal which reduce the width
                              and/or length of the metal by greater then 25% of
                              the designed dimension is rejectable.

                  4.2.3.2     EQ Rings which are scratched are damaged such that
                              the metal is not continuous from point to point is
                              rejectable.

                  4.2.3.3     The designed separation of any two metallizations
                              has been reduced by more than 50%.

                  4.2.3.4     The narrowest pattern of metallization is reduced
                              by overetching/scratch by more than 25% of its
                              designed value.


                  4.2.3.5     Any evidence of peeling, blistering, or lifting of
                              the metal is rejectable.

                  4.2.3.6     Any metal misalignment such that the area of the
                              contact window that is exposed is equal or greater
                              in width than the distance between the contact cut
                              edge and the diffusion line.

            4.2.4 Bond Pad Rejects

                  4.2.4.1     Any abnormal coloration of the bond pad.

                  4.2.4.2     Any substance on the bond pad in the form of
                              chemical residues, stains or other contaminants
                              that can not be removed by a D.I. water clean.

                  4.2.4.3     Metal covering less than 75% of the bond pad area
                              is rejectable.

                  4.2.4.4     Any nitride left in the bond pad is rejectable.

                  4.2.4.5     The bond pad is reduced to less than than 75% of
                              its designed area.

                  4.2.4.6     The bond pad is not entirely on the metal.

            4.2.5 Passivation Rejects

                  4.2.5.1     Any passivation voids in the active metal of die
                              is rejectable.

                  4.2.5.2     Any evidence of lifting, peeling, cracked or
                              missing nitride is rejectable.

            4.2.6 Contamination Rejects

                  4.2.6.1     Any foreign material that can not be removed by
                              chemical soneration followed by D.I. water rinse
                              is rejectable.

                  4.2.6.2     Foreign material bridging any two metal lines or
                              reducing the designed separation of any two 


                              metal lines by greater than 50% is rejectable.

            4.2.7 Other

                  4.2.7.1     Any area with a defect other then those defined
                              above including evidence of damage, improper or
                              non-standard processing shall be held by Torex for
                              review with Cebu and or SC engineering for
                              disposition prior to shipment.


                                                            PG 5/5 - TRANSISTORS

                               INSPECTION PATTERN


                                   [ FIGURE ]


   5 areas per wafer
                                      21 die per area


                             DOCUMENTATION MANAGERS

Each party designates the persons identified below as its Documentation Manager
for the receipt and dispatch, on its behalf, of all Confidential Information
disclosed pursuant to this Agreement as follows:

FOR DISCLOSING PARTY:                           FOR RECIPIENT:
Attention:                                      Attention:

- ------------------------------------            ------------------------------

- ------------------------------------            ------------------------------

- ------------------------------------            ------------------------------

- ------------------------------------            ------------------------------
Telephone: (408) 721-4062                       Telephone: (0866)62-4121
 Fax:  (408) 732-4116                           Fax: (0866) 63-1426

Each party may change its Documentation Manager upon written notice to the other
party.

Both parties shall be relieved of all obligations hereunder FIVE (5) years after
July 8, 1991.

UNDERSTOOD AND AGREED:

DISCLOSING PARTY:                               RECIPIENT:

NATIONAL SEMICONDUCTOR CORPORATION              TOREX SEMICONDUCTOR LTD.


- ------------------------------------            ------------------------------
Signature                                       Signature

- ------------------------------------            ------------------------------
Type of Print Name                              Type of Print Name

- ------------------------------------            ------------------------------
Title                                           Title

- ------------------------------------            ------------------------------
Date                                            Date

Return fully executed copies of this Agreement to each party's Documentation
Manager.

                                   APPENDIX A

Items Considered To Be Confidential Under Terms Of The Foregoing Confidential
Disclosure Agreement:

            SEMICONDUCTOR DESIGN, PROCESS, AND MANUFACTURING INFORMATION.


Authorized Purposes For Use Of Confidential Information Under Foregoing
Confidential Disclosure Agreement:

            FOR USE BY TOPEX IN SUPPLYING SEMICONDUCTOR DICE, WAFERS, PIECE
PARTS, AND PACKAGED DEVICES TO NATIONAL.


                           RELIABILITY TEST CONDITIONS

15-Nov-91                                                         Page 1 of 5
- --------------------------------------------------------------------------------
    TEST        TEST
             DEFINITION                       TEST CONDITIONS
- --------------------------------------------------------------------------------
ACLV      AUTOCLAVE         TEMPERATURE         21 Deg C

          PLASTIC           PRESSURE            15 PSIG
          UNITS
                            READOUT             0/168 Hrs

                            SAMPLE SIZE         100 Units
- --------------------------------------------------------------------------------
ACOL      AC OP LIFE        TEMPERATURE         28 Deg C

          GLASS SEALS       BIAS                1D & 1S: IOU = 50 ma; VR = WIV
                            CONDITIONS          All Others: Io = 200 ma; VR =
                                                WIV

                            READOUT             0/168/500/1000 Hrs

                            SAMPLE SIZE         100 Units
- --------------------------------------------------------------------------------
DCOL      DC OP LIFE        TEMPERATURE         25 Deg C

                            BIAS                1D & 1S: If = 150 ma
                            CONDITIONS          DE: IF = 300 ma
                                                All Other Glass Seals:  IF =
                                                400 ma
                                                SOT-23: IF = 208 man/Junct; PD
                                                = 250 mw
                                                1T; DCOL NOT PERFORMED

                            READOUT             0/168/500/1000 Hrs
                                                
                            SAMPLE SIZE         100 Units (2 Chamber slots per
                                                sample)
- --------------------------------------------------------------------------------
HTRB      HIGH TEMP         TEMPERATURE         150 Deg C
          REVERSE
          BIAS              BIAS                80% RATED VOLTAGE
                            CONDITIONS

                            READOUT             0/168/500/1000 Hrs

                            SAMPLE SIZE         100 Units (2 Chamber slots per
                                                sample)
- --------------------------------------------------------------------------------
HTS       HIGH TEMP         TEMPERATURE         150 Deg C (Plastic only)
          STORAGE                               200 Deg C (Glass seals only)

                            READOUT             0/168/500/100 Hrs

                            SAMPLE SIZE         100 Units
- --------------------------------------------------------------------------------


                           RELIABILITY TEST CONDITIONS

15-Nov-91                                                         Page 2 of 5
- --------------------------------------------------------------------------------
                TEST
    TEST     DEFINITION                       TEST CONDITIONS
- --------------------------------------------------------------------------------
TMCL      TEMP CYCLE        TEMPERATURE         -40 to +150 Deg C

                            READOUT             0/100/200 Cyc

                            SAMPLE SIZE         100 Units
- --------------------------------------------------------------------------------
TMSK      THERMO            TEMPERATURE         -55 to +125 Deg C
          SHOCK

                            READOUT             0/100/200 Cyc

                            SAMPLE SIZE         100 Units
- --------------------------------------------------------------------------------
VFPL      VF PULL           TEMPERATURE         25 Deg C

                            BIAS                If = 200 ma
                            CONDITIONS

                            APPLIED PULL        10 pounds

                            REJECT              DEGRADATION = Delta VF @ 26 -
                            CRITERIA            100 mv
                                                CATASTROPHIC = Delta VF g.t.
                                                100 mv

                            SAMPLE SIZE         DO-35 Package Only - 500 Units
- --------------------------------------------------------------------------------
THBT      HUMIDITY          TEMPERATURE         85 Deg C @ 85% RH

          PLASTIC           BIAS                VR = 10 v
          UNITS             CONDITIONS

                            READOUT             0/168/500/1000 Hrs

                            SAMPLE SIZE         100 Units
- --------------------------------------------------------------------------------

NOTE:  ON ALL REL TESTS ACCEPT ON 1; REJECT ON 2


                       PROPOSED TOREX DIODE QUALIFICATION

            LOCATION PERFORMING REL TESTING HAS OPTION OF PERFORMING
             EITHER ACOL or DCOL TEST ACCORDING TO CURRENT CAPACITY
                      3 DIFFERENT DIE RUNS FOR EACH PRODUCT




15-Nov-91                                                                                        Page 3 of 5
- -----------------------------------------------------------------------------------------------------------------------
                                                                             REL
                                OLD                                         TESTS
     PKG           NSID         CODE               COMMENTS                 REQ'D                TIME POINTS
- -----------------------------------------------------------------------------------------------------------------------
                                                                               
DO-35           D3           1000        1N4148                         ACOL            168 hrs; 500 hrs; 1,000 hrs
                                                                        DCOL            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTRB            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTS             168 hrs; 500 hrs;
                                                                        TMSK            100 cyl; 500 cyl
                                                                        VF PULL         500 UNITS

DO-35           D4           1100        SMALL CONTACT                  ACOL            168 hrs
                                         1000 PRODUCT                   DCOL            168 hrs
                                                                        HTRB            168 hrs
                                                                        VF PULL         500 UNITS

DO-35           D5           1800        OVER-DIFFUSED                  ACOL            168 hrs
                                         1000 PRODUCT                   DCOL            168 hrs
                                                                        HTRB            168 hrs
                                                                        VF PULL         500 UNITS
- -----------------------------------------------------------------------------------------------------------------------
DO-7            1D           1300        FJT 1100                       ACOL            168 hrs; 500 hrs; 1,000 hrs
                                                                        DCOL            168 hrs; 500 hrs;  1,000 hrs
                                                                        HTRB            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTS             168 hrs; 500 hrs;
                                                                        TMSK            100 cyl; 500 cyl
- -----------------------------------------------------------------------------------------------------------------------
DO-7            1G           1400        DO7 VERSION OF                 ACOL            168 hrs
                                         1450 PRODUCT                   DCOL            168 hrs
                                                                        HTRB            168 hrs

SOT-23          1H           1425        SOT VERSION OF                 DCOL            168 hrs
                                         1450 PRODUCT                   HTRB            168 hrs
                                                MMBD 1405               ACLV            168 hrs
                                                DUAL DICE               TMSK            100 cyl;
                                                                        WIRE PULL

DO-35           1J           1450        FDH-400                        ACOL            168 hrs
                                                                        DCOL            168 hrs
                                                                        HTRB            168 hrs
                                                                        VF PULL         500 UNITS

DO-35           1V           1460        HIGH VOLTAGE                   ACOL            168 hrs; 500 hrs; 1,000 hrs
                                         VERSION OF                     DCOL            168 hrs; 500 hrs; 1,000 hrs
                                         1450 PRODUCT                   HTRB            168 hrs; 500 hrs; 1,000 hrs
- -----------------------------------------------------------------------------------------------------------------------






- -----------------------------------------------------------------------------------------------------------------------
                                                                                           
                                                                        HTS             168 hrs; 500 hrs;
                                                                        TMSK            100 cycl; 500 cyl
                                                                        VF PULL         500 UNITS
- -----------------------------------------------------------------------------------------------------------------------


                       PROPOSED TOREX DIODE QUALIFICATION

            LOCATION PERFORMING REL TESTING HAS OPTION OF PERFORMING
             EITHER ACOL or DCOL TEST ACCORDING TO CURRENT CAPACITY
                      3 DIFFERENT DIE RUNS FOR EACH PRODUCT




15-Nov-91                                                                                        Page 4 of 5
- -----------------------------------------------------------------------------------------------------------------------
                                                                             REL
                                OLD                                         TESTS
     PKG           NSID         CODE               COMMENTS                 REQ'D                TIME POINTS
- -----------------------------------------------------------------------------------------------------------------------
                                                                               
DO-7            1K           1500        DO 7 VERSION OF                ACOL            168 Hrs
                                         1550 PRODUCT                   DCOL            168 Hrs
                                                                        HTRB            168 Hrs

SOT-23          1L           1525        SOT VERSION OF                 ACOL            168 hrs
                                         1550 PRODUCT                   DCOL            168 hrs
                                              MMBD 1505                 HTRB            168 hrs
                                              DUAL DICE                 TMSK            100 cyl;
                                                                        WIRE PULL

DO-35           1M           1550        HIGH VOLTAGE                   ACOL            168 hrs; 500hrs; 1,000 hrs
                                         VERSION OF                     DCOL            168 hrs; 500 hrs; 1,000 hrs
                                         1550 PRODUCT                   HTRB            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTS             168 hrs; 500 hrs;
                                                                        TMSK            100 cyl; 500 cyl
                                                                        VF PULL         500 UNITS

- -----------------------------------------------------------------------------------------------------------------------
DO-7            1N           1600        DO7 VERSION OF                 ACOL            168 hrs
                                         1625 PRODUCT                   DCOL            168 hrs
                                                                        HTRB            168 hrs

SOT-23          1P           1625        MMBD 1205                      DCOL            168 hrs 500 hrs; 1,000 hrs
                                         DUAL DICE                      HTRB            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTS             168 hrs; 500 hrs; 1,000 hrs
                                                                        ACLV            168 hrs
                                                                        TMSK            100 cyl; 500 cyl
                                                                        85/85           1000 hrs
                                                                        WIRE PULL

DO-35           Ir           1650        DO35 VERSION OF                ACOL            168 hrs
                                         1625 PRODUCT                   DCOL            168 hrs
                                                                        HTRB            168 hrs
                                                                        VF PULL         500 UNITS

DO-35           IrB          1650        DELCO 1650                     ACOL            168 hrs; 500 hrs; 1,000 hrs
                                         FDH-9550                       DCOL            168 hrs; 500 hrs; 1,000 hrs






                                                                                        
                                                                        HTRB            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTS             168 hrs; 500 hrs;
                                                                        TMSK            100 cyl; 500 cyl
                                                                        VF PULL         500 UNITS
- -----------------------------------------------------------------------------------------------------------------------




                       PROPOSED TOREX DIODE QUALIFICATION

            LOCATION PERFORMING REL TESTING HAS OPTION OF PERFORMING
             EITHER ACOL or DCOL TEST ACCORDING TO CURRENT CAPACITY
                      3 DIFFERENT DIE RUNS FOR EACH PRODUCT




15-Nov-91                                                                                        Page 5 of 5
- -----------------------------------------------------------------------------------------------------------------------
                                                                             REL
                                OLD                                         TESTS
     PKG           NSID         CODE               COMMENTS                 REQ'D                TIME POINTS
- -----------------------------------------------------------------------------------------------------------------------
                                                                               
DO-7            1S           1700        FD 700                         ACOL            168 hrs; 500 hrs; 1,000 hrs
                                                                        DCOL            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTRB            168 hrs; 500 hrs; 1,000 hrs
                                                                        HTS             168 hrs; 500 hrs;
                                                                        TMSK            100 cyl; 500 cyl

SOT-23          1T           1725        SOT VERSION OF                 DCOL            168 Hrs
                                         1700 PRODUCT                   HTRB            168 Hrs
                                              MMBD 1705                 ACLV            168 Hrs
                                              DUAL DICE                 TMSK            100 cyl;
                                                                        WIRE PULL
- -----------------------------------------------------------------------------------------------------------------------


NOTE:  ON ALL REL TESTS ACCEPT ON 1; REJECT ON 2


                                  ATTACHMENT V

                              PACKING SPECIFICATION


                              PACKING SPECIFICATION

PURPOSE:    THIS SPECIFICATION APPLIES TO ALL 4 INCH WAFER PACKING.

SCOPE:      THIS COVERS ALL DIODE AND TRANSISTOR FINISHED WAFERS SHIPPED TO
            NATIONAL SEMICONDUCTOR CEBU PHILIPPINES

LABEL:      ALL PACKAGES SHALL CARRY THE FOLLOWING INFORMATION:

      1)    DEVICE (NS ID AND APPLICABLE REVISION) AND BIN TARGET

      2)    LOT NUMBER

      3)    WAFER QUANTITY

      4)    MANUFACTURED BY

PACKING:    1)    TO ENSURE NO DAMAGE DURING TRANSPORTATION, THE PACKING METHOD 
IS DONE PER THE DIAGRAM BELOW:

                              _______________  SPONGE
                              _______________  PAPER
                              _______________  WAFER
                              _______________  PAPER


      [  FIGURE  ]                  [  FIGURE  ]


2)    FOR TRANSISTORS, THE WAFERS ARE TO BE PACKED IN NUMERICAL ORDER.

3)    WAFERS SHOULD BE PLACED IAN THE CONTAINER WITH THE FRONT OF THE WAFER
      FACING UP.

4)    THE LID OF THE CONTAINER MUST OF A TYPE THAT WILL STAY ON THE CONTAINER
      WITHOUT TAPE.


                                                                January 14, 1992

To:   Richard Hung
From:  Maureen Feltz

Subject:  Torex/NSC Contract Proposal

Ammendments:

1)    Item #3     Term

      "The term of this Agreement shall be effective...continued thereafter for
      5 years,...

2)    Item #4     Price and Payment

      (rewrite pricing paragraph)

      SELLER shall sell the products listed in Attachment 1 (refer to letter of
intent) at the prices specified therein.

      Objective: Pricing shall remain fixed for 5 years, the duration of this
      Agreement.

      Latitude: Pricing shall remain fixed for te first 2 years and for the
remaining 3 years if the SELLER warrants a price increase, the price increase is
to be no grater than "x"% of the current price for the duration of the
Agreement.

      NSC and Torex agree to payment terms; DA20.

3)    Item #5     Quantities

      (*Tom Welch to define minimum electrical yield for diodes and transistors
that will be guaranteed under this contract. In addition Tom will be responsible
for enclosing all inspection documents needed by Torex, ie. Clause for narrow
bata distribution.)

4)    Item #7     Scheduling

      "One week prior to the first day of each NSC fiscal accounting period, NSC
shall provide SELLER with a 4 period rolling forecast per NSC Fiscal year
calendar (attached) on a period basis, in writing the first 5 weeks of which
will be given on a firm weekly requirement basis. SELLER shall confirm
acceptance of the forecast within 3 working days of receipt."

      (eliminate next paragraph, "NSC may without cost or liability... as
liability is addressed under item #17 Indemnification and Limitation of
Liability)

5)    Item #8     Leatimes

      (rewrite)


      "SELLER guarantees that leadtime on new orders shall not exceed 4 weeks
ex-factory for initial order.

6)    Item #12e   Process Changes

      (add)

      "If after 30 days the problems cannot be resolved by the SELLER, the
SELLER is to alert NSC immediately and the situation is to receive the full
attention of both parties until mutually resolved."

7)    Item #13    NSC Suggestions and Approvals

      - See contract paragraph-

      (Need suggestions from SELLER/Torex on what they are looking for and what
they don't understand with regards to the term "obligations".)

8)    Item #17    Indemnification and Limitation of Liability

      (rewrite paragraph #3)

      "NSC shall not be liable to SELLER for any cancellation penalties,
excluding ones resulting from cancellation of 3 periods firm orders, work in
process, or any other amounts to compensate SELLER for lost profits or
opportunities, so long as NSC pays for accepted products from SELLER at the
prices, in quantities and under terms that are consistent with this Agreement.

      (add)

      SELLER must promise to do their best to minimize all liabilities. (See
Kyocera contract for wording)

9)    At the end of the existing contract an additional paragraph will be cited
      with regards to "Exchange of Personnel".

      Objective: Exchange of dedicated personnel, one National employee for one
Torex employee for the duration of this 5 Year Agreement.

      Notes: National employee to take up permanent residence in Japan and an
office in Torex's Japan Facility. Torex employee to take up permanent residence
in Cebu and an office in NSC's Cebu facility.


                                 ATTACHMENT VII


                     EXTENSION - SECTION 15 CONFIDENTIALITY

      In addition to the confidentiality agreement covered in section 15, where
both parties pledge to maintain the confidentiality of information transferred
to them, Torex will sell NSC designed products and any future derivatives of NSC
products only to NSC or its successors.


TOREX PROPOSAL - 3/11/92

                                 ATTACHMENT VII

                     EXTENSION - SECTION 15 CONFIDENTIALITY

In addition to the confidentiality agreement covered in section 15, where both
parties pledge to maintain the confidentiality of information transferred to
them, Torex will sell NSC designed products and any future derivatives of NSC
products only to NSC or its successors. A derivative in this paragraph is
defined as a product in which the design is developed by or under written
instructions from NSC or its successors.


Signed :                                  Signed:
NATIONAL SEMICONDUCTOR CORP.              TOREX SEMICONDUCTOR LTD.


- ----------------------------              -----------------------------

R.E. Belcher                              Hiroshi Tori
Vice President & General Manager          President
Discrete Division


Date: _______________________             Date: ________________________


                             DOCUMENTATION MANAGERS

Each party designates the persons identified below as its Documentation Manager
for the receipt and dispatch, on its behalf, of all Confidential Information
disclosed pursuant to this Agreement as follows:

FOR DISCLOSING PARTY:                           FOR RECIPIENT:
Attention:                                      Attention:
TOM WELSH M/S 4-150                             H. TANI
2900 SEMICONDUCTOR DRIVE                        TOREX SEMICONDUCTOR LTD.
P. O. BOX 58090                                 6833 KINOKO, IBARA-CITY
SANTA CLARA, CA 95052-8090                      OKAYAMA, 715 JAPAN
Telephone: (408) 721-4062                       Telephone: (0866)62-4121
Fax:  (408) 732-4116                            Fax: (0866) 63-1426

Each party may change its Documentation Manager upon written notice to the other
party.

Both parties shall be relieved of all obligations hereunder FIVE (5) years after
July 8, 1991.

UNDERSTOOD AND AGREED:

DISCLOSING PARTY:                               RECIPIENT:

NATIONAL SEMICONDUCTOR CORPORATION              TOREX SEMICONDUCTOR LTD.


- ------------------------------------            ------------------------------
Signature                                       Signature


- ------------------------------------            ------------------------------
Type of Print Name                              Type of Print Name

VICE PRESIDENT DISCRETE DIVISION                SENIOR MANAGING DIRECTOR
- ------------------------------------            ------------------------------
Title                                           Title

JULY 8, 1991                                    JULY 8, 1991
- ------------------------------------            ------------------------------
Date                                            Date

Return fully executed copies of this Agreement to each party's Documentation
Manager.

                                   APPENDIX A

Items Considered To Be Confidential Under Terms Of The Foregoing Confidential
Disclosure Agreement:

            SEMICONDUCTOR DESIGN, PROCESS, AND MANUFACTURING INFORMATION.


Authorized Purposes For Use Of Confidential Information Under Foregoing
Confidential Disclosure Agreement:

            FOR USE BY TOPEX IN SUPPLYING SEMICONDUCTOR DICE, WAFERS, PIECE
PARTS, AND PACKAGED DEVICES TO NATIONAL.


                                LETTER OF INTENT

THIS LETTER OF INTENT is dated _______________ of August, 1991, by and between
NATIONAL SEMICONDUCTOR CORPORATION, a Delaware Corporation, having a principal
place of business at 2900 Semiconductor Drive, Santa Clara, California
95052-8090 (hereinafter "NSC") and THINK-O ELECTRIC COMPANY, a Japanese
corporation, having a principal place of business at 150 Kinoko, Ibara-City,
Okayama, 715 Japan (hereinafter "TEC"). NSC and/or TEC may be referred to herein
as a "party" or the "parties" as the case may require.

                                   WITNESSETH:

      WHEREAS, NSC and TEC have entered into preliminary discussions concerning
the creation of a business relationship between the parties; and

      WHEREAS, NSC and TEC desire to record and memorialize the substance of
those discussions in order to construct a framework from which a final binding
agreement can be negotiated.

      NOW, THEREFORE, in furtherance of the premises the parties hereto set
forth the following:

1.    NSC shall purchase discrete semiconductor dice and/or wafers, and will
      consider the purchase of other semiconductor materials and piece parts,
      from TEC on a preferred supplier basis.

2.    TEC shall supply such materials to NSC as a preferred customer with
      special pricing and guaranteed production capacity.

3.    Should TEC discrete semiconductors be successfully qualified by NSC and
      should the parties agree on price, quality, delivery and other terms and
      conditions of sale, then NSC shall agree to commence purchasing a minimum
      of Five Thousand (5,000) wafers, or dice equivalent, per month from TEC.
      Since the parties acknowledge that NSC requirements for discrete
      semiconductors may increase during the two year period following the
      signing of a final agreement by the parties, TEC agrees that it shall, at
      NSC's request, make available to NSC up to Fifteen Thousand (15,000)
      discrete semiconductor wafers per month. Depending upon TEC performance
      and semiconductor market conditions, the parties agree that this schedule
      can be extended and that the quantity of wafers to be delivered thereunder
      can be increased up to Twenty Thousand (20,000) or more per month.

4.    The parties agree to cooperate and take all reasonable steps necessary to
      resolve any problems that may arise with regard to performance, price,
      quality or delivery.


5.    The initial prices to NSC for TEC wafers shall be follows:

                                                                       Bias
 Combined Total                                          Finished    Resistor
  Wafers/Month      Diodes       Zeners      Trans.       Trans.      Trans.
  ------------      ------       ------      ------       ------      ------

   4,000-9,999      $65.00       $80.00      $85.00       $95.00      $92.00
  10,000 & Up       $60.00       $76.00      $85.00       $95.00      $87.00

      Diode and zener prices do not include front bump or back metal. Transistor
      prices do not include back metal, but shall sample probing. All prices
      include production masks and incidental tooling expenses. NSC shall supply
      mask masters. The listed prices are also based on yields of Ninety-eight
      (98%) percent for diodes and Ninty-five (95%) percent for transistors.

6.    Initial deliveries by TEC shall be four (4) weeks after receipt of order.
      Following deliveries will be based upon a four (4) month rolling forecast
      supplied by NSC and updated monthly.

7.    The parties agree to review pricing annually.

8.    This Letter of Intent shall not be a binding commitment upon either party,
      but shall instead serve as a basis for good faith negotiations between NSC
      and TEC leading to a final binding contract. The parties agree to strive
      to execute such a contract not later than September 30, 1991.

9.    The final contract shall be administered on behalf of TEC by Torex
      Semiconductor LTD., TEC's international operations management company.

10.   Neither party shall publicize or otherwise disclose the terms of this
      relationship, this Letter of Intent, or the final agreement, without the
      prior written approval of the other party.

            IN WITNESS WHEREOF, the parties have had this Letter of Intent
executed by their respective authorized officers on the day and date first
written above.

THINK-O ELECTRIC COMPANY                NATIONAL SEMICONDUCTOR CORPORATION


By:                                 By:                                       
   ----------------------------        ---------------------------------------


Title:___________________________   Title______________________________________


Die Size:  10 x 10 mils                  Die Size: 17.5 x 17.5 mils
Diode Test Program                       Diode Test Program

- ---------------------------------------  ---------------------------------------
Test   Condition      Min    Max         Test   Condition      Min    Max
- ---------------------------------------  ---------------------------------------
Ir     Vr=22v         3.0          nA    Ir     Vr=130v               5     nA
- ---------------------------------------  ---------------------------------------
Ir     Vr=22v                20    nA    Ir     Vr=185v               10    nA
- ---------------------------------------  ---------------------------------------
BV     Ir=5uA         78           v     BV     Ir=5uA         205          v
- ---------------------------------------  ---------------------------------------
BV     Ir=100uA       103`         v     BV     Ir=                         v
- ---------------------------------------  ---------------------------------------
BV     Ir=100uA              180   v     BV     Ir=                         V
- ---------------------------------------  ---------------------------------------
Vf     If=1.0uA              325   mv    Vf     If=10uA               430   mv
- ---------------------------------------  ---------------------------------------
Vf     If=10uA               420   mv    Vf     If=                         mv
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment                   Date    Rev    Comment
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92 A      Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  1PC                             Device:  IrC
Die Size:  15 x 15 mils                  Die Size: 15 x 15 mils
Diode Test Program                       Diode Test Program

- ---------------------------------------  ---------------------------------------
Test   Condition      Min    Max         Test   Condition      Min    Max
- ---------------------------------------  ---------------------------------------
Ir     Vr=22v         4.0          nA    Ir     Vr=22v                      nA
- ---------------------------------------  ---------------------------------------
Ir     Vr=22v                20    nA    Ir     Vr=22v                30    nA
- ---------------------------------------  ---------------------------------------
Ir     Ir=52v         78     40    nA    Ir     Ir=52v                80    nA
- ---------------------------------------  ---------------------------------------
BV     Ir=                         v     BV     Ir=                         v
- ---------------------------------------  ---------------------------------------
BV     Ir=100uA       103          v     BV     Ir=100uA       103          V
- ---------------------------------------  ---------------------------------------
Vf     If=1.0uA              320   mv    Vf     If=1.0uA              320   mv
- ---------------------------------------  ---------------------------------------
Vf     If=10uA               385   mv    Vf     If=10uA               385   mv
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment                   Date    Rev    Comment
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92 A      Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device
Die Size:  25 x 25 mils                    Die Size: 25 x 25 mils

- ---------------------------------------    -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- ---------------------------------------    -------------------------------------
VBE       1b=10mA              1.8   v     VBE    1b=10mA             1.8   v
- ---------------------------------------    -------------------------------------
ICBO      Vcb=60v              100   nA    ICBO   Vcb=60v             100   nA
- ---------------------------------------    -------------------------------------
ICES      Vce=                       nA    ICES   Vce=                      nA
- ---------------------------------------    -------------------------------------
IEBO      veb=10v              100   nA    IEBO   Veb=10v             100   nA
- ---------------------------------------    -------------------------------------
BVCEO     1c=10mA        32          v     BVCEO  1c=10mA                   v
- ---------------------------------------    -------------------------------------
BVCES     1c=100uA       48          v     BVCES  1c=100uA      45          v
- ---------------------------------------    -------------------------------------
BVEBO     1e=10uA        13          v     BVEBO  1e=10uA       13          v
- ---------------------------------------    -------------------------------------
HFE       1c=100mA       5K    100K        HFE    1c=100mA      60K   300K
          Vce=5.0v                                Vce=5.0v
- ---------------------------------------    -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     5K   10K    -1                    A1
- ---------------------------------------  ---------------------------------------
A2     10K  25K                          A2
- ---------------------------------------  ---------------------------------------
B1     25K  35K    -2                    B1
- ---------------------------------------  ---------------------------------------
B2     35K  45K    -3                    B2
- ---------------------------------------  ---------------------------------------
C1     45K  60K    -4                    C1     60K   120K   -4
- ---------------------------------------  ---------------------------------------
C2     60K  100K   -5                    C2     120K  300K   -5
- ---------------------------------------  ---------------------------------------
                                         *Torex will target to Bin 5 but NS will
                                         accept wfr with yld in Bin 4 that make 
                                         the lot aver yld > S/S >80%

- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date    Rev    Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92 A      Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


            [ illegible ]

- -     All wafers are tested at T85, 100 spots/wafer

- -     A minimum of 95% wafer yield to the BV, leakage, Vbe portion of the
      specification for the target bin yield except when it is determined by
      both parties that the HFE target will cause the BV distribution to fall
      below the specification. An engineering plan to improve the BV
      distribution for these high HFE devices will be developed and reviewed in
      three periods. Along with the electrical yields in general. Examples are
      as follows:

             PRODUCT                      HFE RANK
             -------                      --------

             05S                          - C1, C2
             12R                          - B2, C1, C2
             16J                          - A2, B1, B2
             38J                          - B1, B2, C1
             66R                          - B2, C1
             74l                          - B1, B2
             79L                          - A2, B1, B2, C1

- -     A minimum 80% lot average yield to the HFE bin with no wafer in the lot
      having less than 40% yield to the HFE bin. 

- -     For HFE bin targets where the HFE range is less than 2:1 or there is a
      high HFE requirement, the lot average yield for these bins is a minimum
      60% with no wafer in the lot yielding less than 40%. These bins will be
      identified on the test programs.

- -     NSC and Torex agree to review these yields after a device has run for
      three periods to see if a change to the yield accept limit is needed. The
      target goal for the HFE bins is 90%.

DIODE YIELD ACCEPTANCE

All wafers are tested at T85 as follows:

- -     5 wafers/lot sampled; 100 spots/wafer

      *     If the yield is greater/= 93%, the lot is shipped to Cebu

      *     If the 1 or more wafers have less than 93%, 5 more wafers in the 
            lot are tested 

      2nd group of 5 wafers sampled; 100 spots/wafer

      *     If all of these wafers greater/= 93%, the lot is shipped to Cebu

      *     If one of more wafers yield less than 93%, the remaining wafers in 
            the lot are tested

Any wafer with yield less than 86% is scrapped at Think-O. Wafers with yield 
between 86-93% can be shipped to Cebu as long as the total number of wafers 
in this yield range does not exceed 15% of the shipment.

This is to be reviewed in 30 days from today with a target yield goal of 96% or
greater.


- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              1.8   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=65v              100   nA    ICES   Vce=50v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=7.0v             100   nA    IEBO   Veb=6.3v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        100         v     BVCEO  1c=10mA       55          v
- -----------------------------------------  -------------------------------------
BVCES     1c=100uA       110         v     BVCES  1c=100uA      110         v
- -----------------------------------------  -------------------------------------
BVEBO     1e=1.0mA       19.5        v     BVEBO  1e=10uA       8.2         v
- -----------------------------------------  -------------------------------------
HFE       1c=100mA       4K    100K        HFE    1c=1.0mA      150   900
          Vce=5.0v                                Vce=5.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     4K   10K    -1                    A1
- ---------------------------------------  ---------------------------------------
A2     10K  25K    -2                    A2     150   275    -2
- ---------------------------------------  ---------------------------------------
B1     25K  35K    -4                    B1     275   450    -3
- ---------------------------------------  ---------------------------------------
B2     35K  70K    -3                    B2     450   550    -4
- ---------------------------------------  ---------------------------------------
C1     70K  100K   -3                    C1     550   650    -4
- ---------------------------------------  ---------------------------------------
C2                                       C2     650   900    -5
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
11/25/91  A    Issue         E. Keiser   11/22/91 A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


                                            Pr 10K Bin 4 Test Spec
- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=90v              100   nA    ICBO   Vcb=65v             100   nA
- -----------------------------------------  -------------------------------------
ICES      Vce=55v              100   nA    ICES   Vce=55v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=5.0v             100   nA    IEBO   Veb=5.0v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        50          v     BVCEO  1c=10mA       42          v
- -----------------------------------------  -------------------------------------
BVCES     1c=100uA                   v     BVCES  1c=100uA                  v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        7.0         v     BVEBO  1e=10uA       7.0         v
- -----------------------------------------  -------------------------------------
HFE       1c=10mA        110   800         HFE    1c=10mA       450   800
          Vce=5.0v                                Vce=5.0v
- -----------------------------------------  -------------------------------------

- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1                                       A1
- ---------------------------------------  ---------------------------------------
A2     110  180    -2                    A2
- ---------------------------------------  ---------------------------------------
B1     180  225    -5                    B1
- ---------------------------------------  ---------------------------------------
B2     225  360    -3                    B2
- ---------------------------------------  ---------------------------------------
C1     360  450    -3                    C1
- ---------------------------------------  ---------------------------------------
C2     450  800    -4                    C2     450   800    -4
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------
*for Bin 4, use Pr 10 Bin 4 test spec

- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
11/22/91  A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------
1/22/92   B    add Bin 4     E. Keiser
               test spec
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=90v              100   nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=60v              100   nA    ICES   Vce=65v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=5.0v             100   nA    IEBO   Veb=6.0v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        84          v     BVCEO  1c=10mA       84          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        90          v     BVCES  1c=10uA       160         v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        7.0         v     BVEBO  1e=10uA       8.2         v
- -----------------------------------------  -------------------------------------
HFE       1c=10mA        110   700         HFE    1c=100mA      55    550
          Vce=5.0v                                Vce=5.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1                                       A1     55    110    -1
- ---------------------------------------  ---------------------------------------
A2     110  220    -2 / -3               A2     110   150
- ---------------------------------------  ---------------------------------------
B1     220  270                          B1     150   200    -2
- ---------------------------------------  ---------------------------------------
B2     270  350    -4                    B2     200   250    -3
- ---------------------------------------  ---------------------------------------
C1     350  440                          C1     250   300    -4
- ---------------------------------------  ---------------------------------------
C2     440  700    -5                    C2     300   550
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=45v              100   nA    ICES   Vce=125v            100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=5.0v             100   nA    IEBO   Veb=5.0v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        43          v     BVCEO  1c=10mA       168         v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        80          v     BVCES  1c=10uA       220         v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        6.5         v     BVEBO  1e=10uA       6.5         v
- -----------------------------------------  -------------------------------------
HFE       1c=50mA        45    320         HFE    1c=10mA       66    250
          Vce=1.0v                                Vce=5.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     45   110    -1                    A1     66    90     -3
- ---------------------------------------  ---------------------------------------
A2     110  120    -2 / -8               A2     90    120    -2 / -3
- ---------------------------------------  ---------------------------------------
B1     120  150    -2 / -8               B1     120   225    -2 / -3 / -4
- ---------------------------------------  ---------------------------------------
B2     150  190    -2 / -8               B2     225   250    -4
- ---------------------------------------  ---------------------------------------
C1     190  320    -2                    C1
- ---------------------------------------  ---------------------------------------
C2                                       C2
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=1.0mA            0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=65v              100   nA    ICES   Vce=25v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=5.0v             100   nA    IEBO   Veb=4.2v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        43          v     BVCEO  1c=1.0mA      16          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA                    v     BVCES  1c=10uA       42          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        6.5         v     BVEBO  1e=10uA       4.8         v
- ----------------------------------------  -------------------------------------
HFE       1c=100mA       65    350         HFE    1c=10mA       50    110
          Vce=10v                                 Vce=1.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     65   110    -1                    A1     50    110    -1
- ---------------------------------------  ---------------------------------------
A2     110  150    -2                    A2
- ---------------------------------------  ---------------------------------------
B1     150  200    -2                    B1
- ---------------------------------------  ---------------------------------------
B2     200  270    -2 / -3               B2
- ---------------------------------------  ---------------------------------------
C1     270  350    -3                    C1
- ---------------------------------------  ---------------------------------------
C2                                       C2
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
11/25/91  A    Issue         E. Keiser   2/14/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=25v              100   nA    ICES   Vce=40v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=4.0v             100   nA    IEBO   Veb=5.3v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        16          v     BVCEO  1c=10mA       43          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        42          v     BVCES  1c=10uA       70          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        5.2         v     BVEBO  1e=10uA       6.5         v
- -----------------------------------------  -------------------------------------
HFE       1c=30mA        40    110         HFE    1c=10mA       60    450
          Vce=1.0v                                Vce=1.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     40   110    -1                    A1     60    110    -1
- ---------------------------------------  ---------------------------------------
A2                                       A2     110   130    -1 / -2
- ---------------------------------------  ---------------------------------------
B1                                       B1     130   150    -2
- ---------------------------------------  ---------------------------------------
B2                                       B2     150   270    -2 / -3
- ---------------------------------------  ---------------------------------------
C1                                       C1     270   380    -3 / -8
- ---------------------------------------  ---------------------------------------
C2                                       C2     380   450    -8
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
2/14/92   A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------
                                         2/14/92  B     Add Bin 8     E. Keiser
                                                        target, C2
                                                        HFE rank;
                                                        change HFE
                                                        max to 450
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device: 25P / C3025                        Device:  75S / C3037
Die Size:  29 x 28 mils                    Die Size: 31 x 31 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=40v              100   nA    ICES   Vce=45v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=4.5v             100   nA    IEBO   Veb=4.5v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        52          v     BVCEO  1c=10mA       32          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        83          v     BVCES  1c=10uA       73          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        6.5         v     BVEBO  1e=10uA       6.5         v
- -----------------------------------------  -------------------------------------
HFE       1c=100mA       66    135         HFE    1c=100mA      90    315
          Vce=1.0v                                Vce=1.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     66   135    -1                    A1     90    110    -2
- ---------------------------------------  ---------------------------------------
A2                                       A2     110   130    -2 / -4
- ---------------------------------------  ---------------------------------------
B1                                       B1     130   180    -2 / -4
- ---------------------------------------  ---------------------------------------
B2                                       B2     180   220    -2 / -3/ -4
- ---------------------------------------  ---------------------------------------
C1                                       C1     220   270    -2/ -3/ -4
- ---------------------------------------  ---------------------------------------
C2                                       C2     270   315    -4
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  38J / D3038                              Device:  39J / D3039
Die Size:  31 x 31 mils                           Die Size:  31 x 31 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=55v              100   nA    ICES   Vce=63v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=6.3v             100   nA    IEBO   Veb=6.3v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        60          v     BVCEO  1c=10mA       84          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        93          v     BVCES  1c=10uA       94          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        7.2         v     BVEBO  1e=10uA       8.4         v
- -----------------------------------------  -------------------------------------
HFE       1c=100mA       55    540         HFE    1c=100mA      50    450
          Vce=1.0v                                Vce=1.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     55   110    -1                    A1     50    90     -1 / -2
- ---------------------------------------  ---------------------------------------
A2     110  170    -2 / -4               A2     90    150    -1 / -2
- ---------------------------------------  ---------------------------------------
B1     170  270    -2/ -3/ -4            B1     150   225    -2/ -3/ -4
- ---------------------------------------  ---------------------------------------
B2     270  360    -3/ -4/ -5            B2     225   250    -3/ -4/ -5
- ---------------------------------------  ---------------------------------------
C1     360  540    -5                    C1     250   350    -4/ -5
- ---------------------------------------  ---------------------------------------
C2                                       C2     350   450    -5
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  42P / C3042                              Device:  43W / C3043
Die Size: 15 x 15 mils                            Die Size: 13 x 15 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=1.0mA             0.9   v     VBE    1b=1.0mA            0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=33v              100   nA    ICES   Vce=33v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=4.0v             100   nA    IEBO   Veb=3.5v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=1.0mA       42          v     BVCEO  1c=1.0mA      16          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        45          v     BVCES  1c=10uA       35          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10mA        5.2         v     BVEBO  1e=10uA       5.3         v
- -----------------------------------------  -------------------------------------
HFE       1c=10mA        55    220         HFE    1c=10mA       45    180
          Vce=5.0v                                Vce=5.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     55   66     -1                    A1     45    55     -1
- ---------------------------------------  ---------------------------------------
A2     66   110    -1                    A2     55    75     -1
- ---------------------------------------  ---------------------------------------
B1     110  135    -2                    B1     75    90     -1 / -2
- ---------------------------------------  ---------------------------------------
B2     135  180    -3 / -4               B2     90    110    -2 / -3
- ---------------------------------------  ---------------------------------------
C1     180  220    -3 / -4               C1     110   140    -2 / -3
- ---------------------------------------  ---------------------------------------
C2                                       C2     140   180    -3
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
2/14/92   A    Issue         E. Keiser   2/14/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  ? / 03048                                Device:  61H / B3061
Die Size:  28 x 28 mils                           Die Size:  25 x 25 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             1.8   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=150v             100   nA    ICES   Vce=32v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=6.3v             100   nA    IEBO   Veb=11v             100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        315         v     BVCEO  1c=10mA       45          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        325         v     BVCES  1c=10uA       50          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        7.0         v     BVEBO  1e=10uA       12.5        v
- -----------------------------------------  -------------------------------------
HFE       1c=10mA        40    150         HFE    1c=100mA      8K    190K
          Vce=10v                                 Vce=5.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     40   50     -1                    A1     8K    12K    -1
- ---------------------------------------  ---------------------------------------
A2     50   80     -1 / -2               A2     12K   22K    -1 / -2
- ---------------------------------------  ---------------------------------------
B1     80   150    -2                    B1     22K   52K    -1 / -2
- ---------------------------------------  ---------------------------------------
B2                                       B2     52K   77K    -2 / -3
- ---------------------------------------  ---------------------------------------
C1                                       C1     77K   100K   -3 / -4
- ---------------------------------------  ---------------------------------------
C2                                       C2     100K  190K   -4 / -5
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
11/25/91  A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------
                                         2/14/92  B     Redefined
                                                        HFE ranks,
                                                        new bins
                                                        added;
                                                        changed
                                                        BVCEO to
                                                        min 45v,
                                                        BVCES to
                                                        min 45v
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  62M / A3062                              Device:  63W / A3063
Die Size:  18 x 18 mils                           Die Size: 19 x 19 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=45v              100   nA    ICES   Vce=45v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=6.5v             100   nA    IEBO   Veb=5.0v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=1.0mA       65          v     BVCEO  1c=10mA       64          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        80          v     BVCES  1c=10uA       70          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        8.2         v     BVEBO  1e=10uA       6.3         v
- -----------------------------------------  -------------------------------------
HFE       1c=1.0mA       110   800         HFE    1c=150mA      65    330
          Vce=5.0v                                Vce=10v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     110  150    -2                    A1     65    110    -1
- ---------------------------------------  ---------------------------------------
A2     150  225    -2 / -3               A2     110   130    -2
- ---------------------------------------  ---------------------------------------
B1     225  300    -2 / -3               B1     130   170    -2 / -3
- ---------------------------------------  ---------------------------------------
B2     300  450    -4                    B2     170   270    -2 / -3
- ---------------------------------------  ---------------------------------------
C1     450  600    -4                    C1     270   330    -3
- ---------------------------------------  ---------------------------------------
C2     600  800    -5                    C2
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Changed       E. Keiser   1/22/92  A     Issue         E. Keiser
               Veb=6.3v,
               HFE rank
               limits
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  66R / A3066                       Device 67M / B3067
Die Size:  22 x 13 mils                    Die Size:  30 x 30 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=40v              100   nA    ICES   Vce=60v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=5.0v             100   nA    IEBO   Veb=6.3v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        43          v     BVCEO  1c=10mA       84          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        50          v     BVCES  1c=10uA       90          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        6.3         v     BVEBO  1e=10uA       7.2         v
- -----------------------------------------  -------------------------------------
HFE       1c=10mA        66    380         HFE    1c=100mA      50    550
          Vce=1.0v                                Vce=5.0v
- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     66   110    -1                    A1     50    110    -1
- ---------------------------------------  ---------------------------------------
A2     110  130    -1                    A2     110   150    -2
- ---------------------------------------  ---------------------------------------
B1     130  150    -2                    B1     150   200    -2
- ---------------------------------------  ---------------------------------------
B2     150  270    -2 / -3               B2     200   240    -2
- ---------------------------------------  ---------------------------------------
C1     270  380    -3                    C1     240   270    -2 / -3
- ---------------------------------------  ---------------------------------------
C2                                       C2     270   550    -3
- ---------------------------------------  ---------------------------------------
                                         *For Bin 3 only, the acceptable min lot
                                         average yield is 60% with no wafer 
                                         yielding less than 40%

- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
11/25/91  A    Issue         E. Keiser   1/22/91  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  68 K / A3068                      Device 68K/ A3068
Die Size:  20 x 20 mils                    Die Size:  20 x 20 mils
                                           Pr 68 Bin 4

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=45v              100   nA    ICES   Vce=45v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=5.0v             100   nA    IEBO   Veb=5.0v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        48          v     BVCEO  1c=10mA       42          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        50          v     BVCES  1c=10uA       50          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        7.0         v     BVEBO  1e=10uA       7.0         v
- -----------------------------------------  -------------------------------------
HFE       1c=10mA        110   800         HFE    1c=10mA       450   800
          Vce=5.0v                                Vce=5.0v
- -----------------------------------------  -------------------------------------

- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1                                       A1
- ---------------------------------------  ---------------------------------------
A2     110  225    -2                    A2
- ---------------------------------------  ---------------------------------------
B1     225  300    -3                    B1
- ---------------------------------------  ---------------------------------------
B2     300  450    -3                    B2
- ---------------------------------------  ---------------------------------------
C1     450  600    -5                    C1
- ---------------------------------------  ---------------------------------------
C2     600  800    -4                    C2     450   800    -4
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
11/25/91  A    Issue         E. Keiser   1/22/91  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------
1/22/92   B    Add Bin 4     E. Keiser
               spec,
               change C2
               HFE to 800
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device: 74L / A3074                        Device:  76J / B3076
Die Size:  19 x 19 mils                    Die Size:  33 x 27 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=75v              100   nA    ICES   Vce=150v            100   nA
- -----------------------------------------  -------------------------------------
IEBO      Veb=5.0v             100   nA    IEBO   Veb=6.3v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        170         v     BVCEO  1c=10mA       315         v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        180         v     BVCES  1c=10uA       315         v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10mA        7.2         v     BVEBO  1e=10uA       7.8   10    v
- -----------------------------------------  -------------------------------------
HFE       1c=10mA        45    180         HFE    1c=10mA       43    250
          Vce=10v                                 Vce=10v
- -----------------------------------------  -------------------------------------

- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     45   65     -1                    A1     43    50     -1
- ---------------------------------------  ---------------------------------------
A2     65   80     -1 / -2               A2     50    85     -1 / -2
- ---------------------------------------  ---------------------------------------
B1     80   130    -1 / -2               B1     85    100    -2
- ---------------------------------------  ---------------------------------------
B2     130  180    -1 / -2               B2     100   150    -2 / -3
- ---------------------------------------  ---------------------------------------
C1                                       C1     150   200    -3
- ---------------------------------------  ---------------------------------------
C2                                       C2     200   250    -3
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


Device:  77J / A3077                       Device:  78J / B_______
Die Size:  31 x 31 mils                    Die Size:  31 x 31 mils

- -----------------------------------------  -------------------------------------
Test      Condition      Min   Max         Test   Condition     Min   Max
- -----------------------------------------  -------------------------------------
VBE       1b=10mA              0.9   v     VBE    1b=10mA             0.9   v
- -----------------------------------------  -------------------------------------
ICBO      Vcb=                       nA    ICBO   Vcb=                      nA
- -----------------------------------------  -------------------------------------
ICES      Vce=30v              100   nA    ICES   Vce=50v             100   nA
- -----------------------------------------  -------------------------------------
IEBO      Vce=4.5v             100   nA    IEBO   Veb=6.3v            100   nA
- -----------------------------------------  -------------------------------------
BVCEO     1c=10mA        35          v     BVCEO  1c=10mA       63          v
- -----------------------------------------  -------------------------------------
BVCES     1c=10uA        50          v     BVCES  1c=10uA       70          v
- -----------------------------------------  -------------------------------------
BVEBO     1e=10uA        6.3         v     BVEBO  1e=10uA       7.0         v
- -----------------------------------------  -------------------------------------
HFE       1c=100mA       55    350         HFE    1c=100mA      55    400
          Vce=1.0v                                Vce=1.0v
- -----------------------------------------  -------------------------------------

- -----------------------------------------  -------------------------------------


- ---------------------------------------  ---------------------------------------
HFE    HFE  HFE    Order Bin             HFE    HFE   HFE    Order Bin
Rank   min  max                          Rank   min   max
- ---------------------------------------  ---------------------------------------
A1     55   110    -1                    A1     55    110    -1
- ---------------------------------------  ---------------------------------------
A2     110  150    -1 / -2               A2     110   150    -1
- ---------------------------------------  ---------------------------------------
B1     150  200    -2                    B1     150   200    -2 / -3
- ---------------------------------------  ---------------------------------------
B2     200  250    -2 / -3               B2     200   250    -2/ -3
- ---------------------------------------  ---------------------------------------
C1     250  300    -3                    C1     250   300    -3 / -4
- ---------------------------------------  ---------------------------------------
C2     300  350    -3                    C2     300   400    -4
- ---------------------------------------  ---------------------------------------


- ---------------------------------------  ---------------------------------------
Date      Rev  Comment       Signoff     Date     Rev   Comment       Signoff
- ---------------------------------------  ---------------------------------------
1/22/92   A    Issue         E. Keiser   1/22/92  A     Issue         E. Keiser
- ---------------------------------------  ---------------------------------------
                                         2/14/9_  B     Changed max   E. Keiser
                                                        HFE to 400
                                                        Added Bin 4
- ---------------------------------------  ---------------------------------------

- ---------------------------------------  ---------------------------------------


- -----------------------------------------
Test      Condition      Min   Max
- -----------------------------------------
VBE       1b=10mA              0.9   v
- -----------------------------------------
ICBO      Vcb=80v              100   nA
- -----------------------------------------
ICES      Vce=                       nA
- -----------------------------------------
IEBO      Veb=5.2v             100   nA
- -----------------------------------------
BVCEO     1c=10mA        128         v
- -----------------------------------------
BVCES     1c=10uA        130         v
- -----------------------------------------
BVEBO     1e=10uA        7.0         v
- -----------------------------------------
HFE       1c=100mA       55    250
          Vce=1.0v
- -----------------------------------------

- -----------------------------------------


- ---------------------------------------
HFE    HFE  HFE    Order Bin
Rank   min  max
- ---------------------------------------
A1     50   80     -1
- ---------------------------------------
A2     80   120    -1 / -2 / -3
- ---------------------------------------
B1     120  160    -1/ -2 / -3
- ---------------------------------------
B2     160  200    -3
- ---------------------------------------
C1     200  250    -3
- ---------------------------------------
C2
- ---------------------------------------


- ---------------------------------------
Date      Rev  Comment       Signoff
- ---------------------------------------
11/22/92  A    Issue         E. Keiser
- ---------------------------------------

- ---------------------------------------

- ---------------------------------------


      Latitude: Exchange of several dedicated NSC and Torex personnel to be in
place during the transition. (need to specify an approximate time frame)

      Notes: In addition, both parties agree to hold quarterly review meetings
with dedicated personnel from both parties present and alternating meeting site.

        In the event of a crisis, NSC and Torex will maintain the ability to
exchange competant personnel at each site within 48 hours to address critical
situation.


cc:  Louis Yamauchi


                                 ATTACHMENT III

                               BASE LINE PROCESSES



- --------------------------------------------------------------------------------
              NSC DEVICE   TOREX DEVICE  STANDARD     MAILING DATE     NOTE
                                         NUMBER
- --------------------------------------------------------------------------------
TRANSISTORS   74l          A3074                      APRIL 17,
                                                      1992
              ------------------------------------------------------------------
              76J          B3076                      The Date is Not Yet Fixed
              ------------------------------------------------------------------
              77J          A3077                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              78J          B3078                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              79L          B3079                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------

              ------------------------------------------------------------------

              ------------------------------------------------------------------

              ------------------------------------------------------------------

- --------------------------------------------------------------------------------
Diodes        D3D *        DS76         D41002        ---
- --------------------------------------------------------------------------------
              1PC          DS77                       The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              IRC          DS78                       The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              1MC          DS79                       The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------

              ------------------------------------------------------------------

              ------------------------------------------------------------------

              ------------------------------------------------------------------

- --------------------------------------------------------------------------------

                                    [CHARTS]

- --------------------------------------------------------------------------------
              NSC DEVICE   TOREX DEVICE  STANDARD     MAILING DATE     NOTE
                                         NUMBER
- --------------------------------------------------------------------------------
TRANSISTORS   05R          D3005H                     APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              05S          D3005L                     APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              06F          D3006                      MARCH 19,
                                                      1992
              ------------------------------------------------------------------
              07T          C3007                      The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              10K *        C3010         H40403            --
              ------------------------------------------------------------------
              11F          C3011                      The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              12R          D3012                      APRIL 17,
                                                      1992
              ------------------------------------------------------------------
              13N          D3013                      APRIL 17,
                                                      1992
              ------------------------------------------------------------------
              16J          C3016                      APRIL 17,
                                                      1992
              ------------------------------------------------------------------
              19T          C3019L        H40404       MARCH 19,
                                                      1992
              ------------------------------------------------------------------
              19U          C3019H        H40405       MARCH 19,
                                                      1992
              ------------------------------------------------------------------
              21K          C3021                      The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              22M          C3022                      The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              23U          C3023         H40406       The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              25P          C3025                      The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              37J          C3037                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              38J          D3038                      APRIL 17,
                                                      1992
              ------------------------------------------------------------------
              39J          D3039                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              42P          C3042                      The Date is Not Yet Fixed
              ------------------------------------------------------------------
              43W          C3043                      The Date is Not Yet
                                                      Fixed.
              ------------------------------------------------------------------
              48T          D3048                      MARCH 19,
                                                      1992
              ------------------------------------------------------------------



              ------------------------------------------------------------------
              61H          B3061                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              62M          A3062                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              63W          A3063         H40003       MARCH 19,
                                                      1992
              ------------------------------------------------------------------
              66R          A3066         H40004       MARCH 19,
                                                      1992
              ------------------------------------------------------------------
              67M          B3067                      APRIL 25,
                                                      1992
              ------------------------------------------------------------------
              68K*         A3068         H40005            --
- --------------------------------------------------------------------------------



                                  ATTACHMENT IV

                           QUALIFICATION REQUIREMENTS

                                       AND

                           QUALITY LEVEL REQUIREMENTS


                        CONFIDENTIAL DISCLOSURE AGREEMENT

National Semiconductor Corporation, with a principal place of business at 2900
Semiconductor Drive, Santa Clara, CA, ("Disclosing Party") and TOREX
SEMICONDUCTOR LTD. with a principal place of business at 6833 Kinoko,
Ibara-City, Okayama 715 Japan , ("Recipient"), mutually agree that certain
confidential information of the Disclosing Party, relating to items described on
Appendix A, which if furnished by the Disclosing Party to Recipient in written
or other tangible form is clearly marked as being confidential or if orally or
visually furnished, is identified as being confidential in a writing submitted
to the Recipient within thirty (30) days after such oral or visual disclosure
shall be considered by the Recipient to be the Confidential Information of the
Disclosing Party.

Recipient agrees to maintain the Confidential Information of the Disclosing
party received hereunder in confidence utilizing the same degree of care the
Recipient uses to protect its own confidential information of a similar nature
and to not disclose such information to any third party or to employees of the
Recipient without a need to know.

Recipient shall use the Confidential Information received hereunder only for the
purposes designated in Appendix A.

Recipient agrees to fully comply with the United States Export Administration
Regulations, assuring the Disclosing Party that, unless prior authorization is
obtained from the United States Office of Export Administration, Recipient does
not intend to and shall not knowingly export or re-export, directly or
indirectly, any Confidential Information received hereunder or any product
thereof in contradiction of current Export Administration Regulations published
by the United States Department of Commerce. The obligations under this
paragraph shall survive any termination of this Agreement.

This Agreement shall impose no obligation upon the Recipient with respect to any
Confidential Information of the Disclosing Party which (i) is now or which
subsequently becomes generally known or available; (ii) is known to the
Recipient at the time of receipt of same from the Disclosing Party; (iii) is
provided by the Disclosing Party to a third party without restriction on
disclosure; (iv) is subsequently rightfully provided to the Recipient by a third
party without restriction on disclosure; or (v) is independently developed by
the Recipient provided the person or persons developing same have not had access
to the Confidential Information of the Disclosing Party.

All written data delivered by Disclosing Party to Recipient pursuant to this
Agreement shall be and remain the property of the Disclosing Party, and all such
written data, and any copies thereof, shall be promptly returned to the
Disclosing Party upon written request, or destroyed at the Disclosing Party's
option.




No rights or obligations other than those expressly recited herein are to be
implied from this Agreement. No license is hereby granted directly or indirectly
under any patent.