A

Abracon Corporation 
Alcoswitch/Tyco Electronics
Allegro MicroSystems, Inc. 
Altera
AMP/Tyco Electronics
Amphenol
Amphenol Commercial Products
Amphenol Connex
Amphenol Industrial

Amphenol Pcd
Amphenol RF
Amphenol Sine Systems
Amphenol-Tuchel Electronics

Aceprox

ACP

Actel

Alliance

AMCC

Asiliant

Apex Precision Power
APM Hexseal 
Assmann Electronics, Inc.
Atmel
Avago Technologies US, Inc.
AVX Corporation

Analog Devices, Inc.

B

BCcomponents/Vishay
Bel Fuse, Inc.
Beyschlag/Vishay

Buck&Hickman 

Cooper  Bussmann UK Ltd

Bourns, Inc.
Binder

Bopla

Bluegiga

Bernic

C

C&K Components
Caddock Electronics, Inc.
Catalyst Semiconductor is now ON Semiconductor
Cherry 
Cirrus Logic, Inc.
Citizen 
Clarostat/Honeywell Sensing and Control
CoEv Magnetics/Tyco Electronics
Coiltronics/Cooper/Bussmann

Corcom/Tyco Electronics
Cypress Semiconductor

CNR

Coilcraft

CRC

Capxon

Carlingswitch

Cree

connectBlue 
Cooper/Bussmann

D

Dale/Vishay
DB Products

DC Components

Degson

Deltron

Diotec

DPV

Diptronics

Dialight
Digi International
Digi International/MaxStream
Diodes, Inc.

Densitron

Dinkle

Dallas

Distrelec

E

Ebm-papst, Inc.
Echelon

EEMB

Elantec

Ericsson

Equator
EPCOS, Inc.

Erni

ESKA

Everlight

F

Fairchild Semiconductor
FCI
Fagor
Fluke Electronics

Fastron

Felder

Freescale Semiconductor, Inc.

Finder

Fischer

FTDI chip

Friwo

Fuji

G

Good-Ark

Gennum

GLYN

General Semiconductor/Vishay

GSI technology

GP Betteries

H

Hahn

Halo

Harting

Harwin

Hifn

Hirschmann

Hittite

Honeywell Microelectronics

Holtek

Huber Suhner

Hameg

Holy stone

Hongfa

Hitachi

I

Infineon Technologies
IC Haus

Iskra

Isocom

ITT Cannon

ICS

Integrated Silicon Solution, Inc. (ISSI)
Intel
International Rectifier
Intersil
ITW
IXYS Corporation

J

JAE Electronics, Inc.

Jauch

Johanson Dielectrics

JST

Joyin

Jamicon

K

Keil
Kemet

Kekon

Khatod

Kaschke

Kingston

Keystone Electronics Corp
Kingbright

KOA

Korchip

Koyo

Kevin Schurter

L

Linear Technology

Lattice

Leoni cables

Lemo

Littelfuse-Wickmann

Lorlin

Lite-On, Inc. 
Littelfuse
Lumex, Inc.
Lumberg

LSI Logic

Lelon

M

Maxim
MaxStream
MEDER electronic 
Melexis

Marvell

Meder

MIC

Micro linear

Mini circuits

Mentor

Motorola

Multicontact

Micrel, Inc.
Microchip Technology
Microsemi
Mill-Max
Molex
Mueller Electric Co. 
Murata Electronics
Murata Power Solutions

Mitsubishi

MPS

Matsushita

Mean well

N

National Semiconductor
NEC/CEL

NessCap

Nesscap

Nicomatic

Nichicon

Nais

NXP Semiconductors (founded by Philips)

NEC

Neltron

Neophotonics

Nordic

Nuintek

O

Ohmite 
Omron

OKI

ON Semiconductor
OSRAM Opto Semiconductors, Inc.

P

Panasonic 
Phoenix Contact
Phoenix Passive Components/Vishay

Pericom

Phycomp

Panduit

Papst

Photon

Potter & Brumfield/Tyco Electronics
Power Integrations
Pulse

Piher

PLX Technology

PCM sierra

Philips

Panjit

Q

Quantum

R

Rabbit Semiconductor
Raychem Cable Protection/Tyco Electronics
Raychem Circuit Protection/Tyco Electronics
RF Solutions

Rafi

Ramtron

Rifa

Richco
ROHM Semiconductor

Radiohm

Radiall

Radox

Realtek

Rubycon

S

Samtec, Inc.
SANYO Semiconductor Corp.
Schurter
Seiko Instruments, Inc.
Semiconductors/Vishay
Sensata Technologies, Airpax
Seoul Semiconductor
Sfernice/Vishay
Sharp Microelectronics
Silicon Laboratories, Inc.
Siliconix/Vishay

Samtech

SIGe

SMSC

Synqor

Schrack

Siemens

Soberton, Inc.
Souriau Connection Technology
Spectrol/Vishay
Sprague Goodman
Sprague/Vishay 
SSI Technologies, Inc 
STMicroelectronics
Sumida Corporation
Sunon

Samsung

Schroff

Schurter

Semikron

SST

Syfer

Samwha

Sauro

T

Taiyo Yuden
TDK-Lambda Americas, Inc.
Texas Instruments
Toshiba

Teko

Tyco Electronics

Tibbo

Transwitch

Triquint

Taiwan semiconductor

U

UMC

UPEK

United Chemi-Con

Unitrode

V

Vishay
Vishay/BCcomponents
Vishay/Beyschlag
Vishay/Dale
Vishay/Foil Resistors
Vishay/General Semiconductor
Vishay/Phoenix Passive Components
Vishay/Semiconductors

Varta

Vishay/Sfernice
Vishay/Siliconix
Vishay/Spectrol
Vishay/Sprague
Vishay/Thin Film
Vishay/Vitramon
Vitramon/Vishay

Vinatech

Vitrohm

W

Weidmüller
Weller
Wickmann/Littelfuse

Wago

Winstar

Winbond Electronics Corp.
Wintec Industries
Würth Electronics, Inc.

Wima

Welwyn

X

Xeltek

Xilinx
XP power

Y

Yageo

Yuan dean

 Yamaichi

Z

Zetex Semiconductors

Zarlink

Zippy

Zilog

Zettler

ZMD