3M Electronic Solutions Division Accurate Circuit Engineering (ACE) Agilent Technologies All Flex – Flexible Circuits Altium Inc. Amherst Systems Associates Amphenol Anritsu Company Ansoft LLC Apache Design Solutions Applied Simulation Technology Atrenta Inc. Baykal Technology, Inc. BERTScope/SyntheSys Research, Inc. Blue Pearl Software Brilliant Instruments Cadence Design Systems, Inc. Cascade Microtech, Inc. Cast, Inc. Celestica Centellax, Inc. ChipEstimate.com Cinch Connectors CMP ConnectorSupplier.com Connfly Electronic Co, Ltd. CST of America Custom Interconnects Denali Software Dini Group Dolphin Integration DuPont Electronics EDA Café and PCB Café EDADOC Technologies EMA Design Automation Endicott Interconnect Technologies, Inc. Epoch Microelectronics, Inc. ERNI Electronics eSilicon Corporation Ethernet Alliance EVE-USA Exatron FCI Fidus Systems Fotofab Gennum Corporation GGB Industries Inc. GiDEL, Ltd. Gigatest Labs Gore HARTING Hirose Electric Co., Ltd. IBIS Open Forum IEEE Xplore Digital Library Innov-X Systems, Inc. Interconnect Systems, Inc. Intermark USA, Inc. IO Methodology Inc. IPextreme Ironwood Electronics Ixia JAE Electronics JetPCB.com

Kilopass LeCroy Corporation LEONI Cables & Systems LLC LUCEO Technologies Mentor Graphics Corporation Meritec Mindspeed Technologies Inc. Mixel, Inc. Molex Incorporated MOSIS Moss Bay EDA (IBM - EMI S/W) National Instruments NCI Logic Analyzers NEC Informatec Systems Neoconix Nicomatic Noise Com Inc. NSCore Oak-Mitsui Technologies Ohmega Technologies, Inc. Orora Design Technologies, Inc. PCB Design 007 PCB Matrix PFC Flexible Circuits Limited Physware, Inc. PicoSecond Pulse Labs, Inc. PLDA Polar Instruments, Inc. Power.org Prentice Hall Professional Probing Solutions, Inc. Prototron Circuits QualiSystems Quellan, Inc. Rambus Rogers Corporation Rosenberger of North America, LLC Samtec Sanmina – SCI Shenzhen Fastprint Circuit Tech Signal Integrity Software (SiSoft) Sigrity, Inc. Silicon Integration Initiative (Si2) Simberian, Inc. Sonnet Software, Inc. Starnet Taconic TDK – Lambda Americas Tektronix Ticona Engineering Polymers TSMC Tyco Electronics UCSC Extension in Silicon Valley Uniquify Virage Logic Virtium Technology Inc. Vitesse Semiconductor Volex Wipro Technologies X2Y Attenuators, LLC Yamaichi Electronics USA Inc. Zeland Software

List current as of January 27, 2009