O2 Micro

http://www.o2micro.com/

Ohmite

http://www.ohmite.com/

Oki Semiconductor

http://www.okisemi.com/

Omnivision Technology

http://www.omnivision-au.com/

Omron

http://www.omron.com/

OPTi Technologies 

http://www.opti-inc.com/index4.html

Orient Semiconductor Electronics

http://www.ose.com.tw/

Oxford Semiconductor

http://www.oxsemi.com/

PANDUIT

http://www.panduit.com/

PCTEL

http://www.pctel.com/

Pericom Semiconductor

http://www.pericom.com/

Philips Semiconductors

http://www.semiconductors.philips.com/

Phoenix Technologies

http://www.phoenix.com/

Pixel Magic Imaging

http://www.pixelmagic.com/

PLX Technology

http://www.plxtech.com/

PMC-Sierra

http://www.pmc-sierra.com/

PowerDsine

http://www.powerdsine.com/

Power Integrations

http://www.powerint.com/

Power-One

http://www.power-one.com/

ProTek Devices

http://www.protekdevices.com/

QLogic

http://www.qlogic.com/

Qualcomm

http://www.qualcomm.com/

Quantum

http://www.quantum.com/

QuickLogic

http://www.quicklogic.com/