EXHIBIT 99.1

                                LITTELFUSE, INC.
                       EQUITY INCENTIVE COMPENSATION PLAN

                             STOCK OPTION AGREEMENT

      THIS 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. Equity Incentive Compensation
      Plan (the "Plan"), the Corporation is authorized to grant options for
      shares of its Common Stock, $.01 par value (the "Common Stock"), to
      officers and employees of the Corporation or any Subsidiary as a reward
      for past performance or as an incentive to future performance.

            B. The Corporation desires to grant an option to the Optionee.

      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 ____________ 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-five percent (25%) 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-five percent (25%) 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-five percent (25%) of the Common Stock covered hereby during the
      four (4) year period commencing three (3) years following the date of
      grant; and with respect to the remaining twenty-five percent (25%) of the
      Common Stock covered hereby during the three (3) year period commencing
      four (4) 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. Change in Control. If a Change in Control occurs, this option
      shall vest immediately prior to such Change in Control.

            5. Termination of Service. In the event that the Optionee ceases to
      be an employee or otherwise provide services to the Corporation and its
      subsidiaries for any reason other than as set forth in Section 11.4 of the
      Plan, this option may, subject to the provisions of the Plan and Section
      12 of this Agreement, 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 service) 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 service
      shall be cancelled and forfeited and the Optionee shall not have any
      further rights whatsoever with respect thereto. Notwithstanding the
      foregoing:

                  5.1 Disability. If the Optionee's service to the Corporation
            is terminated by reason of the Optionee's Disability, as defined in
            the Plan, this option shall vest in full, and may be exercised at
            any time during the period described above, as provided in Section
            11.2(a) of the Plan.

                  5.2 Death. If the Optionee dies, this 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
            11.2(a) of the Plan.

                  5.3 Eligible Retirement. If the Optionee's service to the
            Corporation is terminated by reason of Eligible Retirement, as
            defined in the Plan, this option shall not vest in full at the time
            of termination, but shall continue to vest on the same dates, and be
            exercisable during the same periods, as if the Optionee were still
            employed, as provided in Section 11.2(b) of the Plan.

            6. 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 12.1 of the Plan.

            7. Plan and Committee. The construction of the terms of this
      Agreement shall be controlled by the Plan, a copy of which has been made
      available to the Optionee, which is 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.

            8. 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.

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

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                  8.2 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.

                  8.3 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.

            9. 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 or e-mailed to the Optionee at the most recent address which
      the Optionee has provided in writing to the Corporation.

            10. 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"). This option is
      intended to be a nonstatutory stock option which does not provide for the
      deferral of compensation which would be subject to Section 409A of the
      Code. 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.

            11. 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
      this option. In each case of the exercise of this 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 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.

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            12. Non-Competition Forfeiture Provisions. The Optionee acknowledges
      that a primary objective of the Corporation in deciding to grant this
      option is to provide the Optionee with an incentive to remain an employee
      or service provider of the Corporation and/or one or more of its
      subsidiaries and that this objective will not have been accomplished if
      the Optionee exercises this option, in whole or in part, and shortly
      thereafter the Optionee separates from service with the Corporation and
      its subsidiaries and becomes an employee of, or otherwise provides
      services to, a Competitor (as such term is defined below) of the
      Corporation or any of its subsidiaries. Therefore, anything else to the
      contrary contained in the Plan or this Agreement notwithstanding, in the
      event that the Optionee accepts employment or service with, or becomes
      employed by, or agrees to provide services directly or indirectly to, a
      Competitor as an officer, employee, consultant, agent, representative or
      otherwise (other than ownership, individually or with a group of persons
      acting in concert (as defined in the Exchange Act), of not more than 5% of
      the outstanding common stock of a publicly-traded entity), or in the event
      that any of the Forfeiture Events described in Section 11.4 of the Plan,
      including but not limited to non-solicitation and disclosure of
      confidential information, occur during the Optionee's service with the
      Corporation or any of its subsidiaries or within one year thereafter
      ("Competitive Events"), the Optionee agrees that:

                  12.1 All unexercised options then held by the Optionee which
            have been granted by the Corporation pursuant to this Agreement
            shall be cancelled and forfeited as of the first to occur of the
            Competitive Events and the Optionee shall not have any further
            rights whatsoever with respect thereto; and

                  12.2 The Optionee shall immediately pay to the Corporation in
            cash an amount equal to the product of: (x) the aggregate number
            of shares of Common Stock respecting which the Optionee exercised
            options under this Agreement during the 6 months preceding the first
            to occur of the Competitive Events, and (y) the aggregate
            differences between the exercise price of any such options and the
            respective Fair Market Values (defined in the same manner as set
            forth in Section 2.14 of the Plan) of the Common Stock on the
            respective dates of exercise of such options (the "Award Gain").

            As used herein, the term "Competitor" shall mean any person or
      entity, or any affiliate thereof, which manufactures, distributes or sells
      circuit protection products in competition with the Corporation or any of
      its Subsidiaries. In the event that the Optionee fails to immediately pay
      to the Corporation the Award Gain, the Optionee shall be liable to the
      Corporation for all costs, expenses and attorneys' fees incurred by the
      Corporation in connection with collecting the Award Gain from the
      Optionee, plus interest at a per annum rate equal to the lower of 12% or
      the highest rate permitted by applicable law.

            The Optionee agrees that the Corporation and its Subsidiaries
      compete worldwide in the sale of circuit protection products and that the
      forfeiture provisions of this Section, and Sections 11.3 and 11.4 of the
      Plan, are reasonable as they relate to the objectives of the Corporation
      in deciding to grant the options to the Optionee under this Agreement. In
      the event that any court shall finally hold that any provision of this
      Agreement constitutes

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      an unreasonable or unenforceable restriction against the Optionee, the
      Optionee agrees that the provisions hereof shall not be rendered void but
      shall apply to such extent as such court may judicially determine or
      indicate constitutes a reasonable and enforceable restriction under the
      circumstances involved. The Corporation and the Optionee each request that
      any such court which holds that any of the provisions of this Agreement
      constitutes an unreasonable or unenforceable restriction against the
      Optionee, make a determination of what would constitute a reasonable and
      enforceable restriction under the circumstances involved and to reform
      this Agreement accordingly.

            13. No Right to Continued Service. Nothing in the Plan or in this
      Agreement shall confer upon the Optionee any right to continue in the
      employ or service of the Corporation or any of its Subsidiaries or
      interfere in any way with the right of the Corporation or its Subsidiaries
      to terminate such employment or service at any time.

            14. Governing Law. Agreement shall be governed by and construed in
      accordance with the laws of the State of Delaware, USA, 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
Stock Option Agreement effective as of the date first set forth above.

LITTELFUSE, INC.                                 OPTIONEE:

By _____________________________________         _____________________________


Its ___________________________________

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