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    <ACCEPTANCE-DATETIME>20210223063420
    ACCESSION NUMBER:		0000889331-21-000014
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		67
    CONFORMED PERIOD OF REPORT:	20210223
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210223
    DATE AS OF CHANGE:		20210223

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			LITTELFUSE INC /DE
    		CENTRAL INDEX KEY:			0000889331
    		STANDARD INDUSTRIAL CLASSIFICATION:	SWITCHGEAR & SWITCHBOARD APPARATUS [3613]
    		IRS NUMBER:				363795742
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1226

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-20388
    		FILM NUMBER:		21662992

    	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
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