Xicon
Xicor Inc.
Xilinx Inc
XMOS
XP Power
Yageo
YAMAHA CORPORATION
Yamaichi Electronics
Yamar Electronics Ltd.
Yangzhou yangjie electronic co., ltd
Yellow Stone Corp
YEONHO ELECTRONICS
YOBON TECHNOLOGIES,INC.
YUXIANG Magnetc materials Ind. Co., Ltd.
Z-Communications, Inc
Zarlink Semiconductor Inc
Zentrum Mikroelektronik Dresden AG
Zentrum Mikroelektronik Dresden GmbH
Zetex Semiconductors
ZETTLER Electronics 
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