EXHIBIT 31.1

                        FORM OF SECTION 302 CERTIFICATION


I, Howard B. Witt, certify that:

     1.   I have reviewed this quarterly report on Form 10-Q of Littelfuse,
          Inc.;

     2.   Based on my knowledge, this quarterly report does not contain any
          untrue statement of a material fact or omit to state a material fact
          necessary to make the statements made, in light of the circumstances
          under which such statements were made, not misleading with respect to
          the period covered by this quarterly report;

     3.   Based on my knowledge, the financial statements, and other financial
          information included in this quarterly report, fairly present in all
          material respects the financial condition, results of operations and
          cash flows of the registrant as of, and for, the periods presented in
          this quarterly report;

     4.   The registrant's other certifying officer and I are responsible for
          establishing and maintaining disclosure controls and procedures (as
          defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant
          and have:

          a)   Designed such disclosure controls and procedures to ensure that
               material information relating to the registrant, including its
               consolidated subsidiaries, is made know to us by others within
               those entities, particularly during the period in which this
               quarterly report is being prepared;

          b)   Evaluated the effectiveness of the registrant's disclosure
               controls and procedures as of July 3, 2004; and

          c)   Presented in this quarterly report our conclusions about the
               effectiveness of the disclosure controls and procedures based on
               our evaluation as of the Evaluation Date;

     5.   The registrant's other certifying officer and I have disclosed, based
          on our most recent evaluation, to the registrant's auditors and the
          audit committee of the registrant's board of directors (or persons
          performing the equivalent functions):

          a)   All significant deficiencies in the design or operation of
               internal controls which could adversely affect the registrant's
               ability to record,



               process, summarize and report financial data and have identified
               for the registrant's auditors any material weaknesses in internal
               controls; and

          b)   Any fraud, whether or not material, that involves management or
               other employees who have a significant role in the registrant's
               internal controls; and

     6.   The registrant's other certifying officer and I have indicated in this
          quarterly report whether there were significant changes in internal
          controls or in other factors that could significantly affect internal
          controls subsequent to the date of our most recent evaluation,
          including any corrective actions with regard to significant
          deficiencies and material weaknesses.


Dated: August 12, 2004
       ---------------



                                        /s/ Howard B. Witt
                                        --------------------------
                                        Howard B. Witt
                                        Chairman, President & CEO