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 Annual Report on Form 10-K for the period ended December 29, 2007 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
Chief Executive Officer                 and Chief Financial Officer