    <SEC-DOCUMENT>0001140361-24-013242-index.html : 20240314
    <SEC-HEADER>0001140361-24-013242.hdr.sgml : 20240314
    <ACCEPTANCE-DATETIME>20240314160835
    ACCESSION NUMBER:		0001140361-24-013242
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20240314
    DATE AS OF CHANGE:		20240314

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			LITTELFUSE INC /DE
    		CENTRAL INDEX KEY:			0000889331
    		STANDARD INDUSTRIAL CLASSIFICATION:	SWITCHGEAR & SWITCHBOARD APPARATUS [3613]
    		ORGANIZATION NAME:           	04 Manufacturing
    		IRS NUMBER:				363795742
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1230

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-20388
    		FILM NUMBER:		24750146

    	BUSINESS ADDRESS:
    		STREET 1:		8755 WEST HIGGINS ROAD
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60631
    		BUSINESS PHONE:		773-628-1000

    	MAIL ADDRESS:
    		STREET 1:		8755 WEST HIGGINS ROAD
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60631
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>ny20021424x2_defa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: ny20021424x2_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>ny20021424x2_nc01.jpg
    <TEXT>
    Document 2 - file: ny20021424x2_nc01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>ny20021424x2_nc02.jpg
    <TEXT>
    Document 3 - file: ny20021424x2_nc02.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>