Allen-Bradley
Amphenol
AMP
Aromat
A.T.C.
Bourns
C&K Components
Centralab
Circuit Components
Cornell-Dubilier
Corcom
Clarostat
Dale
Dielectric Laboratories
E.G.&G.
Elpac
Electrocube
Evox-Rifa
General Electric
Hewlett Packard
Ico-Rally
IMB
Johanson Manufacturing
Kanthal-Globar
Kemet
Lite-On

3-M
Maida Development
Mallory Capacitor
Marcon
Molex
Murata Erie
Ohmite
Omron
Potter & Brumfield
Philips / BC Components
Plastic Capacitor
Pulse
Quam-Nichols
Radio Material Corporation
Rogers
Rohm Corporation
S.B. Electronics
Sohio
Spectrol
Spectrum
Sprague / Vishay
Tocos America
Taiyo Yuden
Toko
United Chemicon
Vitec Electronics
Wima