<SEC-DOCUMENT>0001193125-19-159312-index.html : 20190529
<SEC-HEADER>0001193125-19-159312.hdr.sgml : 20190529
<ACCEPTANCE-DATETIME>20190529131703
ACCESSION NUMBER:		0001193125-19-159312
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20181231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20181231
</ITEM>
</RULE>
FILED AS OF DATE:		20190529
DATE AS OF CHANGE:		20190529

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Silicon Motion Technology CORP
		CENTRAL INDEX KEY:			0001329394
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51380
		FILM NUMBER:		19860799

	BUSINESS ADDRESS:	
		STREET 1:		8F-1,  NO. 36, TAIYUAN STREET
		STREET 2:		JHUBEI CITY
		CITY:			HSINCHU COUNTY
		STATE:			F5
		ZIP:			302
		BUSINESS PHONE:		886-3-552-6888

	MAIL ADDRESS:	
		STREET 1:		8F-1,  NO. 36, TAIYUAN STREET
		STREET 2:		JHUBEI CITY
		CITY:			HSINCHU COUNTY
		STATE:			F5
		ZIP:			302
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>d731498dsd.htm
<DESCRIPTION>FORM SD
<TEXT>
Document 1 - file: d731498dsd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>d731498dex101.htm
<DESCRIPTION>EX-1.01
<TEXT>
Document 2 - file: d731498dex101.htm

</DOCUMENT>
</SEC-DOCUMENT>