EXHIBIT 99.6

                                     FORM OF
                      NON-QUALIFIED STOCK OPTION AGREEMENT
                                    UNDER THE
              LITTELFUSE, INC. OUTSIDE DIRECTORS' STOCK OPTION PLAN

     THIS NON-QUALIFIED STOCK OPTION AGREEMENT is entered into as of ______,
20___, between ______________________ (the "Optionee") and LITTELFUSE, INC., a
Delaware corporation (the "Corporation"), with reference to the following facts:

     A. Pursuant to the Littelfuse, Inc. Outside Directors' Stock Option Plan
(the "Plan"), the Corporation is authorized and required to grant an option for
five thousand (5,000) shares of its Common Stock, $.01 par value (the "Common
Stock"), on the date of each annual meeting of the Board of Directors (the
"Board") to each member of the Board who is not an employee of the Corporation
and who has not waived his right to receive such option.

     B. The Optionee was a member of the Board on the date of the annual meeting
held May __, 20__, who was not an employee of the Corporation and did not waive
his right to receive such option.

     NOW, THEREFORE, IN CONSIDERATION of the foregoing facts, the Corporation
hereby grants the following options:

          1. Grant of Option. The Corporation hereby grants to the Optionee an
     irrevocable option to purchase up to 5,000 shares of Common Stock of the
     Corporation at the price of $________ per share. The number and kind of
     shares subject to this option and the purchase price per share are subject
     to adjustment as provided in the Plan. This option shall expire on the day
     before the seventh (7th) anniversary of the date hereof unless earlier
     terminated in accordance with the provisions hereof.

          2. Exercise of Option. Subject to the terms of the Plan and this
     Agreement, this option may be exercised as follows: with respect to twenty
     (20%) of the Common Stock covered hereby during the six (6) year period
     commencing one (1) year following the date of grant; with respect to an
     additional twenty (20%) of the Common Stock covered hereby during the five
     (5) year period commencing two (2) years following the date of grant; with
     respect to an additional twenty (20%) of the Common Stock covered hereby
     during the four (4) year period commencing three (3) years following the
     date of grant; with respect to an additional twenty (20%) of the Common
     Stock covered hereby during the three (3) year period commencing four (4)
     years following the date of grant; and with respect to the remaining twenty
     (20%) of the Common Stock covered hereby during the two (2) year period
     commencing five (5) years following the date of grant. This option shall be
     exercised by delivery of written notice to the Corporation stating the
     number of shares with respect to which the option is being exercised,
     together with full payment of the purchase price therefor. Payment may be
     made in cash or in such other form or combination of forms permitted by the
     Plan as shall be acceptable to the Committee.



          3. Reserved Shares. The Corporation has duly reserved for issuance a
     number of authorized but unissued shares adequate to fulfill its
     obligations under this Agreement. During the term of this Agreement the
     Corporation shall take such action as may be necessary to maintain at all
     times an adequate number of shares reserved for issuance or treasury shares
     to fulfill its obligations hereunder.

          4. Termination of Membership on Board. In the event that the Optionee
     ceases to be a member of the Board (and does not become an employee of the
     Corporation or any of its subsidiaries) for any reason other than as set
     forth in Section 5.4 of the Plan, this option may, subject to the
     provisions of the Plan, be exercised (but only to the extent that the
     Optionee was entitled to do so at the time of the termination of the
     Optionee's membership on the Board) at any time within three (3) months
     after such termination, but in no case later than the date on which this
     option was originally scheduled to expire. Any portion of this option which
     was not exercisable by the Optionee at the time of any such termination of
     membership on the Board shall be cancelled and forfeited and the Optionee
     shall not have any further rights whatsoever with respect thereto.
     Notwithstanding the foregoing:

          (a)  If the Optionee's membership on the Board is terminated by reason
               of the Optionee's Disability, or following a Change in Control
               (as both such terms are defined in the Plan), the option shall
               vest in full, and may be exercised at any time during the period
               described above, as provided in Section 5.4(a) of the Plan.

          (b)  If the Optionee's membership on the Board is terminated by reason
               of the Optionee's death, the option shall vest in full, and may
               be exercised at any time during the period described above,
               except that twelve (12) months shall be substituted for three (3)
               months from the date of termination, as provided in Section
               5.4(a) of the Plan.

          5. Assignment or Transfer. This option may not be assigned or
     transferred except by will or by the laws of descent and distribution or
     pursuant to Section 5.6 of the Plan.

          6. Plan and Committee. The construction of the terms of this Agreement
     shall be controlled by the Plan, a copy of which is attached hereto as
     Exhibit A and hereby made a part hereof as though set forth herein
     verbatim, and the rights of the Optionee are subject to modification and
     termination in certain events as provided in the Plan. All words and
     phrases not otherwise defined herein shall have the meanings provided in
     the Plan. The Committee's interpretations of and determinations under any
     of the provisions of the Plan or this Agreement shall be conclusive.

          7. Compliance with Law. This option shall not be exercised and no
     shares shall be issued in respect hereof, unless in compliance with
     applicable federal and state tax and securities laws.


                                       -2-



               7.1. Certificate Legends. The certificates for shares purchased
          pursuant to this option shall bear any legends deemed necessary by the
          Committee.

               7.2. Representations of the Optionee. As a condition to the
          exercise of this option, the Optionee will deliver to the Corporation
          such signed representations as may be necessary, in the opinion of
          counsel satisfactory to the Corporation, for compliance with
          applicable federal and state securities laws.

               7.3. Resale. The Optionee's ability to transfer shares purchased
          pursuant to this option or securities acquired in lieu thereof or in
          exchange therefor may be restricted under federal or state securities
          laws. The Optionee shall not resell or offer for resale such shares or
          securities unless they have been registered or qualified for resale
          under all applicable federal and state securities laws or an exemption
          from such registration or qualification is available in the opinion of
          counsel satisfactory to the Corporation.

          8. Notice. Every notice or other communication relating to this
     Agreement shall be in writing and shall be mailed or delivered to the party
     for whom it is intended at such address as may from time to time be
     designated by such party in a notice mailed or delivered to the other party
     as herein provided; provided, however, that unless and until some other
     address be so designated, all notices or communications by the Optionee to
     the Corporation shall be mailed or delivered to the Corporation to the
     attention of its Secretary at 800 East Northwest Highway, Des Plaines,
     Illinois 60016, and all notices or communications by the Corporation to the
     Optionee may be given to the Optionee personally or may be mailed to the
     Optionee at the most recent address which the Optionee has provided in
     writing to the Corporation.

          9. Tax Treatment. This option is a non-qualified option and shall not
     be treated as an incentive stock option pursuant to Section 422 of the
     Internal Revenue Code of 1986, as amended (the "Code"). The option is
     intended as a stock right that does not provide for deferral of
     compensation and is not subject to Section 409A of the Code, and shall not
     be interpreted to permit any deferral of compensation that would cause it
     to be subject to Section 409A. The Optionee acknowledges that the tax
     treatment of this option, shares subject to this option or any events or
     transactions with respect thereto may be dependent upon various factors or
     events which are not determined by the Plan or this Agreement. The
     Corporation makes no representations with respect to and hereby disclaims
     all responsibility as to such tax treatment.

          10. Withholding Taxes. The Corporation shall have the right to require
     the Optionee to remit to the Corporation an amount sufficient to satisfy
     any federal, state or local withholding tax requirement prior to the
     delivery of any shares of Common Stock acquired by the exercise of the
     option granted hereunder. In each case of the exercise of the option, the
     Corporation will notify the Optionee of the amount of the withholding tax
     which must be paid under federal and, where applicable, state and local
     law. Upon receipt of such notice, the Optionee shall promptly remit to the
     Corporation the amount specified in such notice. No amounts of income
     received by the Optionee pursuant to this


                                       -3-



     Agreement shall be considered compensation for purposes of any pension or
     retirement plan, insurance plan or any other employee benefit plan of the
     Corporation or any of its Subsidiaries.

          11. Governing Law. Agreement shall be governed by and construed in
     accordance with the laws of the State of Delaware, U.S.A., excluding any
     conflicts or choice of law rule or principle that might otherwise refer
     construction or interpretation of this Agreement to the statutory or common
     law of another jurisdiction.

     IN WITNESS WHEREOF, the Corporation and the Optionee have executed this
Non-Qualified Stock Option Agreement effective as of the date first set forth
above.

LITTELFUSE, INC.                        OPTIONEE:


By
   ----------------------------------   ----------------------------------------
Its
    ---------------------------------


                                       -4-