    <SEC-DOCUMENT>0001193125-20-130994-index.html : 20200501
    <SEC-HEADER>0001193125-20-130994.hdr.sgml : 20200501
    <ACCEPTANCE-DATETIME>20200501161836
    ACCESSION NUMBER:		0001193125-20-130994
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		8
    CONFORMED PERIOD OF REPORT:	20200611
    FILED AS OF DATE:		20200501
    DATE AS OF CHANGE:		20200501
    EFFECTIVENESS DATE:		20200501

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SEMTECH CORP
    		CENTRAL INDEX KEY:			0000088941
    		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
    		IRS NUMBER:				952119684
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0126

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-06395
    		FILM NUMBER:		20841096

    	BUSINESS ADDRESS:
    		STREET 1:		200 FLYNN ROAD
    		CITY:			CAMARILLO
    		STATE:			CA
    		ZIP:			93012-8790
    		BUSINESS PHONE:		8054982111

    	MAIL ADDRESS:
    		STREET 1:		200 FLYNN ROAD
    		CITY:			CAMARILLO
    		STATE:			CA
    		ZIP:			93012-8790
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>d851149ddef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: d851149ddef14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g851149g02g78.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g851149g02g78.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g851149g09b78.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g851149g09b78.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g851149g42x22.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g851149g42x22.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g851149g61j93.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g851149g61j93.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g851149g81k33.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g851149g81k33.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g851149pc1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g851149pc1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g851149pc2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g851149pc2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>