<SEC-DOCUMENT>0001387467-19-000036-index.html : 20190513
<SEC-HEADER>0001387467-19-000036.hdr.sgml : 20190513
<ACCEPTANCE-DATETIME>20190513150833
ACCESSION NUMBER:		0001387467-19-000036
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		1
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20181231
</ITEM>
</RULE>
FILED AS OF DATE:		20190513
DATE AS OF CHANGE:		20190513

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALPHA & OMEGA SEMICONDUCTOR Ltd
		CENTRAL INDEX KEY:			0001387467
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34717
		FILM NUMBER:		19818086

	BUSINESS ADDRESS:	
		STREET 1:		475 OAKMEAD PARKWAY
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94085
		BUSINESS PHONE:		408-830-9742

	MAIL ADDRESS:	
		STREET 1:		475 OAKMEAD PARKWAY
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94085

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALPHA & OMEGA SEMICONDUCTOR LTD
		DATE OF NAME CHANGE:	20070123
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>formsd2018.htm
<DESCRIPTION>SD 2018
<TEXT>
Document 1 - file: formsd2018.htm

</DOCUMENT>
</SEC-DOCUMENT>