EXHIBIT 23.2


            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


We consent to the reference to our firm under the caption "Experts" in the
Post-Effective Amendment No. 1 to the Registration Statement on Form S-8
(No. 333-134699) pertaining to the Littelfuse, Inc. Outside Directors' Equity
Plan and to the incorporation by reference therein of our reports dated
February 23, 2007, with respect to the consolidated financial statements and
schedule of Littelfuse, Inc., Littelfuse Inc. management's assessment of the
effectiveness of internal control over financial reporting, and the
effectiveness of internal control over financial reporting of Littelfuse, Inc.
included in its Annual Report (Form 10-K) for the year ended December 30, 2006,
filed with the Securities and Exchange Commission.


                                           /s/ ERNST & YOUNG, LLP


Chicago, Illinois
June 12, 2007