<SEC-DOCUMENT>0001104659-18-002946-index.html : 20180119
<SEC-HEADER>0001104659-18-002946.hdr.sgml : 20180119
<ACCEPTANCE-DATETIME>20180119060709
ACCESSION NUMBER:		0001104659-18-002946
CONFORMED SUBMISSION TYPE:	S-8 POS
PUBLIC DOCUMENT COUNT:		10
FILED AS OF DATE:		20180119
DATE AS OF CHANGE:		20180119
EFFECTIVENESS DATE:		20180119

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:			1231

	FILING VALUES:
		FORM TYPE:		S-8 POS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-221147
		FILM NUMBER:		18535411

	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>S-8 POS
<SEQUENCE>1
<FILENAME>a18-3448_1s8pos.htm
<DESCRIPTION>S-8 POS
<TEXT>
Document 1 - file: a18-3448_1s8pos.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.3
<SEQUENCE>2
<FILENAME>a18-3448_1ex4d3.htm
<DESCRIPTION>EX-4.3
<TEXT>
Document 2 - file: a18-3448_1ex4d3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.4
<SEQUENCE>3
<FILENAME>a18-3448_1ex4d4.htm
<DESCRIPTION>EX-4.4
<TEXT>
Document 3 - file: a18-3448_1ex4d4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.5
<SEQUENCE>4
<FILENAME>a18-3448_1ex4d5.htm
<DESCRIPTION>EX-4.5
<TEXT>
Document 4 - file: a18-3448_1ex4d5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.6
<SEQUENCE>5
<FILENAME>a18-3448_1ex4d6.htm
<DESCRIPTION>EX-4.6
<TEXT>
Document 5 - file: a18-3448_1ex4d6.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.7
<SEQUENCE>6
<FILENAME>a18-3448_1ex4d7.htm
<DESCRIPTION>EX-4.7
<TEXT>
Document 6 - file: a18-3448_1ex4d7.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.8
<SEQUENCE>7
<FILENAME>a18-3448_1ex4d8.htm
<DESCRIPTION>EX-4.8
<TEXT>
Document 7 - file: a18-3448_1ex4d8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.9
<SEQUENCE>8
<FILENAME>a18-3448_1ex4d9.htm
<DESCRIPTION>EX-4.9
<TEXT>
Document 8 - file: a18-3448_1ex4d9.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>9
<FILENAME>a18-3448_1ex5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 9 - file: a18-3448_1ex5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>10
<FILENAME>a18-3448_1ex23d1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 10 - file: a18-3448_1ex23d1.htm

</DOCUMENT>
</SEC-DOCUMENT>