As filed with the Securities and Exchange Commission on June 12, 2007

                                                     Registration No. 333-134699


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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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


                        POST-EFFECTIVE AMENDMENT NO. 1 TO
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933


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

                                LITTELFUSE, INC.
               (Exact name of issuer as specified in its charter)

                Delaware                                    36-3795742
     (State or other jurisdiction of                     (I.R.S. Employer
     incorporation or organization)                     Identification No.)

       800 East Northwest Highway
          Des Plaines, Illinois                                60016
(Address of principal executive offices)                    (Zip Code)


                                LITTELFUSE, INC.
                         OUTSIDE DIRECTORS' EQUITY PLAN
                            (Full title of the plan)


              Gordon Hunter                         Copies of Communications to:
          Chairman, President                            William C. Hermann
       and Chief Executive Officer                     Chapman and Cutler LLP
            Littelfuse, Inc.                           111 West Monroe Street
       800 East Northwest Highway                     Chicago, Illinois  60603
      Des Plaines, Illinois  60016                         (312) 845-3000
             (847) 824-1188
      (Name, address and telephone
      number of agent for service)

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

                         CALCULATION OF REGISTRATION FEE




======================================================================================
                                          Proposed        Proposed
 Title of                                  maximum         maximum
securities              Amount            offering        aggregate       Amount of
  to be                  to be              price         offering      registration
registered         registered(1)(2)     per share(3)      price(3)          fee(3)
----------         ----------------     ------------      ---------     ------------
                                                            
Common Stock,
$.01 par value      250,000 Shares           N/A             N/A             N/A

======================================================================================



(1) Pursuant to Rule 416, this Registration Statement also covers an
indeterminate number of shares as may be issued as a result of the anti-dilution
provisions of the Plan.

(2) In addition, pursuant to Rule 416(c) under the Securities Act of 1933, as
amended (the "Securities Act"), to the extent applicable, this registration
statement also covers an indeterminate amount of interests to be offered or sold
pursuant to the employee benefit plan described herein.


(3) No additional securities are being registered. The registration fees were
paid upon filing of the original Registration Statement on Form S-8 (Commission
File No. 333-134699) on May 2, 2006. Therefore, no further registration fee is
required.






                                EXPLANATORY NOTE

         This Post-Effective Amendment No. 1 to the Registration Statement on
Form S-8 (Commission File No. 333-134699), filed with the Securities and
Exchange Commission (the "Commission") on May 2, 2006, relating to the Plan, is
being filed by the Company to reflect the change in the name of the Plan from
the Littlefuse, Inc. Outside Directors' Stock Option Plan to the Littlefuse,
Inc. Outside Directors' Equity Plan, which became effective as of April 27,
2007.

         A total of 250,000 shares of the Company's Common Stock were initially
registered pursuant to this Registration Statement, as filed with the Commission
on May 2, 2006. No additional securities are being registered pursuant to this
Post-Effective Amendment No. 1.


                                     PART I

                       INFORMATION REQUIRED IN PROSPECTUS.

ITEM 1.  PLAN INFORMATION.


         The documents containing the information specified in this Item 1 will
be sent or given to employees, officers or others as specified by Rule
428(b)(1). In accordance with the rules and regulations of the Commission and
the instructions to Form S-8, such documents are not being filed with the
Commission either as part of this Registration Statement or as prospectuses or
prospectus supplements pursuant to Rule 424.


ITEM 2.  REGISTRATION INFORMATION AND EMPLOYEE PLAN ANNUAL INFORMATION.

         The documents containing the information specified in this Item 2 will
be sent or given to employees, officers, directors or others as specified by
Rule 428(b)(1). In accordance with the rules and regulations of the Commission
and the instructions to Form S-8, such documents are not being filed with the
Commission either as part of this Registration Statement or as prospectuses or
prospectus supplements pursuant to Rule 424. Such documents, together with the
documents incorporated by reference herein pursuant to Item 3 of Part II of this
Registration Statement on Form S-8, constitute a prospectus that meets the
requirements of Section 10(a) of the Securities Act, and are available, free of
charge, upon written or oral request as follows: Littelfuse, Inc., 800 East
Northwest Highway, Des Plaines, Illinois 60016, attention Secretary; Tel. No.:
(847) 824-1188.


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                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The following documents which have been filed with the Commission by
the Company pursuant to the Securities Exchange Act of 1934 ("1934 Act") are
incorporated herein by reference:


               (a) The Company's Annual Report on Form 10-K for the fiscal year
         ended December 30, 2006 (1934 Act File No. 0-20388).

               (b) The Company's Quarterly Report on Form 10-Q for the fiscal
         quarter ended March 31, 2007 (1934 Act File No. 0-20388).

               (c) The Company's Current Reports on Form 8-K filed on February
         6, 2007, February 8, 2007, March 19, 2007 (two reports), May 2, 2007
         and May 3, 2007 (excluding any portions of such reports that were
         furnished).


               (d) The description of the Company's Common Stock which is
         contained in the Form 10: General Form for Registration of Securities
         pursuant to Section 12(b) or (g) of the 1934 Act filed with the
         Commission on July 7, 1992 (1934 Act File No. 0-20388).

         All documents subsequently filed by the Company pursuant to Sections
13(a), 13(c), 14 and 15(d) of the 1934 Act (excluding any portions of such
documents that were furnished), prior to the filing of a post-effective
amendment which indicates that all securities offered hereby have been sold or
which deregisters all such securities then remaining unsold, shall be deemed to
be incorporated by reference into this Registration Statement and to be a part
hereof from the date of filing such documents. Any statement contained in an
incorporated document shall be deemed to be modified or superseded to the extent
that a statement contained herein or in any subsequently filed incorporated
document modifies or supersedes such statement.

ITEM 4.  DESCRIPTION OF SECURITIES.

         Not applicable.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.


         The consolidated financial statements and schedule of Littelfuse, Inc.
appearing in Littelfuse, Inc.'s Annual Report on Form 10-K for the year ended
December 30, 2006, and Littelfuse, Inc. management's assessment of the
effectiveness of internal control over financial reporting as of December 30,
2006 included therein have been audited by Ernst & Young LLP, independent
registered public accounting firm, as set forth in their reports therein
included therein, and incorporated herein by reference. Such consolidated
financial statements and management's assessment are incorporated herein by
reference in reliance upon such reports, given on authority of such firm as
experts in auditing and accounting.



                                     - 3 -


ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

         Section 145 of the Delaware General Corporation Law ("DGCL") gives
Delaware corporations the power to indemnify present and former officers and
directors under certain circumstances. The Certificate of Incorporation of the
Company provides for indemnification by the Company to the fullest extent
permitted by Section 145 of the DGCL of certain persons (including officers and
directors) in connection with any threatened, pending or completed action, suit
or proceeding brought or threatened against such person by reason of his
position with the Company or service at the request of the Company. The
Certificate of Incorporation further provides that indemnification shall not be
exclusive of any rights to which those indemnified may be entitled under any
bylaw, agreement, vote of stockholders or disinterested directors or otherwise.

         In addition, the Company maintains a directors' and officers' liability
insurance policy to insure its liability under the above-described provision of
its Certificate of Incorporation and to insure its individual directors and
officers certain obligations not covered by such provisions.


ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED

         Not applicable.


ITEM 8.  EXHIBITS

         The following exhibits are submitted herewith or incorporated by
reference herein.




EXHIBIT
NUMBER                                  DESCRIPTION
            
  4.1          Littelfuse, Inc. Outside Directors' Equity Plan (filed as Exhibit
               A to the Company's Proxy Statement for Annual Meeting of
               Stockholders to be held on April 27, 2007 (1934 Act File No.
               0-20388), and incorporated herein by reference)

  4.2          Certificate of Incorporation of Littelfuse, Inc. (filed as
               Exhibit 3.1 to the Company's Form 10-K for the fiscal year ended
               January 3, 1998 (1934 Act File No. 0-20388), and incorporated
               herein by reference)

  4.3          Bylaws of Littelfuse, Inc. (filed as Exhibit 3(II) to the
               Company's Form 8-K dated February 2, 2007 (1934 Act File No.
               0-20388), and incorporated herein by reference)

  5.1          Opinion of Chapman and Cutler LLP (filed with the original
               Registration Statement on Form S-8 (SEC File No. 333-134699) on
               May 2, 2006 and incorporated herein by reference)




                                     - 4 -





EXHIBIT
NUMBER                                  DESCRIPTION
            
 23.1          Consent of Chapman and Cutler LLP (included in Exhibit 5.1)

 23.2*         Consent of Ernst & Young, LLP

 24.1          Power of Attorney (set forth on page II-7 of the original
               Registration Statement on Form S-8 (SEC File No. 333-134699) on
               May 2, 2006 and incorporated herein by reference)

--------------------------
*Filed herewith.


ITEM 9.  UNDERTAKINGS

(a)       The undersigned registrant hereby undertakes:

     (1)  To file, during any period in which offers or sales are being made, a
          post-effective amendment to this registration statement

          (i)   To include any prospectus required by Section 10(a)(3) of the
                Securities Act of 1933;

          (ii)  To reflect in the prospectus any facts or events arising after
                the effective date of the registration statement (or the most
                recent post-effective amendment thereof) which, individually or
                in the aggregate, represent a fundamental change in the
                information set forth in the registration statement.
                Notwithstanding the foregoing, any increase or decrease in
                volume of securities offered (if the total dollar value of
                securities offered would not exceed that which was registered)
                and any deviation from the low or high end of the estimated
                maximum offering range may be reflected in the form of
                prospectus filed with the Commission pursuant to Rule 424(b) if,
                in the aggregate, the changes in volume and price represent no
                more than a 20 percent change in the maximum aggregate offering
                price set forth in the "Calculation of Registration Fee" table
                in the effective registration statement;

          (iii) To include any material information with respect to the plan of
                distribution not previously disclosed in the registration
                statement or any material change to such information in the
                registration statement;

          provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not
          apply if the information required to be included in a post-effective
          amendment by those paragraphs is contained in reports filed with or
          furnished to the Commission by


                                     - 5 -


          the registrant pursuant to Section 13 or Section 15(d) of the
          Securities Exchange Act of 1934 that are incorporated by reference in
          the registration statement.

     (2)  That, for the purpose of determining any liability under the
          Securities Act of 1933, each such post-effective amendment shall be
          deemed to be a new registration statement relating to the securities
          offered therein, and the offering of such securities at that time
          shall be deemed to be the initial bona fide offering thereof.

     (3)  To remove from registration by means of a post-effective amendment any
          of the securities being registered which remain unsold at the
          termination of the offering.

(b)       The undersigned registrant hereby undertakes that, for purposes of
          determining any liability under the Securities Act of 1933, each
          filing of the registrant's annual report pursuant to Section 13(a) or
          Section 15(d) of the Securities Exchange Act of 1934 (and, where
          applicable, each filing of an employee benefit plan's annual report
          pursuant to Section 15(d) of the Securities Exchange Act of 1934) that
          is incorporated by reference in the Registration Statement shall be
          deemed to be a new registration statement relating to the securities
          offered therein, and the offering of such securities at that time
          shall be deemed to be the initial bona fide offering thereof.

(c)       Insofar as indemnification for liabilities arising under the
          Securities Act of 1933 may be permitted to directors, officers and
          controlling persons of the registrant pursuant to the provisions
          described under Item 6 above, or otherwise, the registrant has been
          advised that in the opinion of the Commission such indemnification is
          against public policy as expressed in the Securities Act of 1933 and
          is, therefore, unenforceable. In the event that a claim for
          indemnification against such liabilities (other than the payment by
          the registrant of expenses incurred or paid by a director, officer or
          controlling person of the registrant in the successful defense of any
          action, suit or proceeding) is asserted by such director, officer or
          controlling person in connection with the securities being registered,
          the registrant will, unless in the opinion of its counsel the matter
          has been settled by controlling precedent, submit to a court of
          appropriate jurisdiction the question whether such indemnification by
          it is against public policy as expressed in the Securities Act of 1933
          and will be governed by the final adjudication of such issue.


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                                   SIGNATURES


         Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Des Plaines, State of Illinois, on June 12, 2007.


                                        LITTELFUSE, INC.

                                        By:          /s/ Gordon Hunter
                                            ------------------------------------
                                                       Gordon Hunter,
                                                    Chairman, President
                                                and Chief Executive Officer





         Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities indicated on June 12, 2007.





         SIGNATURE                                      TITLE
                                      
     /s/ Gordon Hunter                           Chairman, President
-------------------------------              and Chief Executive Officer
         Gordon Hunter                      (Principal executive officer)

   /s/ Philip G. Franklin                 Vice President, Operations Support
-------------------------------              and Chief Financial Officer
       Philip G. Franklin                     (Principal financial and
                                                 accounting officer)

               *                                      Director
-------------------------------
       John P. Driscoll

               *                                      Director
-------------------------------
        Anthony Grillo

               *                                      Director
-------------------------------
         John E. Major

   /s/ William P. Noglows                             Director
-------------------------------
       William P. Noglows

               *                                      Director
-------------------------------
       Ronald L. Schubel

*By:  /s/ Philip G. Franklin
     --------------------------
          Philip G. Franklin
        (As Attorney-in-Fact)





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