Circuit Breaker
- Airpax / Sensata
- American Zettler*
- Aromat / Panasonic
- Comus*
- Coto*
- Hager
- Magnecraft*
- Meder*
- NEC
- Omron*
- P&B / Tyco
- Phoenix
- Schurter*
- Sanyou*
- AVX
- AirPax
- AVX
- Bel
- Bourns
- E-T-A Control
- Raychem
- Schrack
- Weber
- Eaton Cutler-Hammer
Connectors
- 2E
- 3M
- Almita
- Amphenol
- Amtek*
- AUK*
- Cambridge
- Cinch*
- Comm-Con*
- Cvilux*
- DCI
- Deutsch*
- Dragon City
- Elco
- Elpakco*
- Erni*
- Harting*
- Heyco*
- Hoffman Products*
- IBS
- ITT-Cannon
- ITW-Pancon*
- Kycon*
- Lemo
- Lewden*
- Major League*
- Methode
- Mill-Max / Preci-Dip*
- Molex
- Neltron*
- Neutrik*
- Oupiin*
- Pollman Elektrotechnik
- Shogyo
- Stewart
- Stocko
- Switchcraft
- Taitek*
- Toby
- Tokyo Dip
- Yazaki
- Yokowo*
- TE Connectivity*
- Teka*
- Rosenberger*
- Degson*
- Zirui*
- CUI
- Amp/Tyco (See TE-Connectivity)
- Cui
- FCI
- Hirose
- JST
- Samtec
- Wago
- Weidmuller
- 3M
- AMP
- AWI
- Amphenol
- Bendix
- Berg
- Bomar
- Calrad
- Cinch
- Crane
- Compel
- Deutsch
- Delta
- Glen-Air
- FCI/Berg
- Feller US Corp
- H.H. Smith
- Hoffman
- Keltron
- IBS Connectors
- ITT Cannon
- J.S.T.
- JAE Electronics
- Johnson components
- Johanson Mfg
- Lemo
- Lewden
- Matrix Science
- Methode
- Mill-Max
- Molex
- Neutrik
- Phoenix
- Raycon
- Switchcraft
- Samtec
- Souriau
- Taitek
- Thomas & Betts
- Tyco
- RF Connectors
- Suyin
- WECO Electrical
- Weidmuller
- Smiths Connectors
- Carlisle
Fans
- Colltron*
- Comair / Rotron*
- Gardtec*
- Sunon*
- U.S Toyo Fan*
- EBM-Papst
- Cooltron*
- Comair Rotron
- Delta
- EBM Industries
- Evox
- Fan-S
- Nidec
- PSC
- NMB
- Qualtek
- Panasonic
- Sanyo
- Shicoh
- Sunon
- UnitedPro
- U.S. Toyo Fan
Hardware
- AEM*
- Arnold Magnetics*
- Fair-Rite Products*
- Ferroxcube*
- Honeywell*
- Kashke KG GMBH*
- Kitagawa*
- Laird Technologies*
- Mag-Inc*
- MMG / Neosid*
- NEC-Tokin*
- Nicera*
- Tai-Tech*
- TDK*
- Toshiba America*
- AEM*
- LEM USA*
- Epcos
- Micro Metals
- Fair-Rite Products
- Ferroxcube (Phillips)
- Honeywell
- IBS Ferrite Cores
- Jantek
- IBS Bobbins
- Kashke KG GMBH
- Magnetics
- MMG
- Micro Metals
- NEC / Tokin
- Norwe
- Quail
- Schwarzpunkt
- TDK
- Temple Steel
- Tokin
- Toshiba America
Magnetics Ferrite Cores and Bobbins
- AEM*
- Arnold Magnetics*
- Fair-Rite Products*
- Ferroxcube*
- Honeywell*
- Kashke KG GMBH*
- Kitagawa*
- Laird Technologies*
- Mag-Inc*
- MMG / Neosid*
- NEC-Tokin*
- Nicera*
- Tai-Tech*
- TDK*
- Toshiba America*
- AEM*
- LEM USA*
- Epcos
- Micro Metals
- Fair-Rite Products
- Ferroxcube (Phillips)
- Honeywell
- IBS Ferrite Cores
- Jantek
- IBS Bobbins
- Kashke KG GMBH
- Magnetics
- MMG
- Micro Metals
- NEC / Tokin
- Norwe
- Quail
- Schwarzpunkt
- TDK
- Temple Steel
- Tokin
- Toshiba America
Optical Fiber Cable
- Showa Electric*
- Asahi
- Lucina
- Showa Electric
Relays & Delay Line
- American Zettler, Inc
- Aromat / Panasonic
- NEC
- Clare
- Omron
- Schrack
- Schneider(Magnacraft)
- Showa Electric
- Songchuan
- Sanyou
- Tyco / Potter Bromfield
- Crydom
- Hamlin
Switches
- Alps*
- Apem*
- Cherry*
- Comus*
- Diptronics*
- E-Switch*
- Marquardt*
- Mini-Circuits*
- Canal Electronic*
- Sanco*
- NKK Switches*
- Alcoswitch / Tyco
- Arcolectric
- C&K / ITT
- Canal*
- Deca
- Bulgin
- AMP
- Arrow-Hart
- Bourns
- Cherry
- C & K
- Cooper Wiring Devices
- Dreefs
- Grayhill
- E-Switch
- H.H. Smith
- JAE Electronics
- ITT
- Marquart
- Omron
- Panasonic
- Schurter
- Siber America
- Switchcraft
- Tyco
- Stern Switch*
Thermal Conductor & Heat Sinks
- Aavid thermalloy*
- Coors Tek*
- Fischer*
- IERC / CTS*
- Wakefield*
- Aavid Thermalloy
- Coors Tek
- WakeField
- IERC / CTS
- R-Theta
- Bergquist
Wire & Tubing
- 3m*
- Alpha*
- Belden*
- Cableco*
- Dearborn*
- G-Apex*
- Icorally*
- Kerrigan-Lewis*
- Leoni*
- Litz Wire*
- Manhattan / CDT*
- Raychem*
- Rubadue*
- Carol*
- Shenzhen Woer*
- Showa Electric*
- Sonic / Thermax*
- Sumitomo*
- Wang Yip*
- Zeus*
- General Cable*
- 3M
- Amphenol SpectraStrip
- Barcel
- Belden
- Cableco
- Dearborn
- Essex Group
- Feller US Corp
- Gruber
- Manhattan / CDT
- Rubadue
- Raychem
- Sonic / Thermax
- Showa Electric
- Sumitomo
- Thermax
- Zeus