EXHIBIT 32.1

                                Littelfuse, Inc.

    Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
                             18 U.S.C. Section 1350

 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and
  (b) of Section 1350, Chapter 63 of title 18, United States Code), each of the
  undersigned officers of Littelfuse, Inc. ("the Company") does hereby certify
                             that to his knowledge:

     The Quarterly Report on Form 10-Q for the period ended September 30, 2006
of the Company fully complies with the requirements of section 13 (a) or 15 (d)
of the Securities Exchange Act of 1934, and the information contained in the
Form 10-K fairly presents, in all material respects, the financial condition and
results of operations of the Company.


/s/ GORDON HUNTER                       /s/ PHILIP G. FRANKLIN
- -------------------------------------   ----------------------------------------
Chairman, President and                 Vice President, Operations Support and
Chief Executive Officer                 Chief Financial Officer