Circuit Breakers
- AirPax
- AVX
- Bel
- Bourns
- E-T-A Control
- Raychem
- Schrack
- Schurter
- Weber
Connectors
- 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
- Thomas & Betts
- Tyco
- RF Connectors
- Suyin
- WECO Electrical
- Weidmuller
Coax Cable Assemblies
- 3M / Robinson Nugent
- Amphenol RF
- Anritsu
- FCI
- Johnson Components
- Molex
- Tyco/AMP
Couplers
- AVX
- Johanson Technology
- Murata
- Tyco M/A
- San-Tran
- HUBER+SUHNER
Fans
- Cooltron
- Comair Rotorn
- Delta
- EBM Industries
- Evox
- Fan-S
- Indec
- PSC
- NMB
- Qualtek
- Panasonic
- Sanyo
- Shicoh
- Sunon
- UnitedPro
- U.S. Toyo Fan
Hardware
- Amatom
- Bivar
- Elpakco
- Fan-S
- EF Johnson
- El Pakco
- Hammond Enclosures
- H.H. Smith
- Hoffman
- IBS
- I.E.R.C.
- Keystone
- Microplastic
- PEM
- PennEngineering
- Mill-Max
- Qualtek
- RAF
- RF Johnson
- Richco
- Seastorm
- Southco
- Teknational
- Seastorm
- Zierick
Chiplus
- AEM
- Fair-Rite Products
- Ferroxcube (Phillips)
- Honeywell
- IBS Ferrite Cores
- Jantek
- IBS Bobbins
- Kashke KG GMBH
- LEM
- Magnetics
- MMG
- Micro Metals
- NEC / Tokin
- Norwe
- SEI Ferrite
- Schwarzpunkt
- TDK
- Temple Steel
- Tokin
- Toshiba America
Thermistors/Thermostat
- Airpax
- Ametherm
- IBS
- GE
- Keystone Carbon Co.
- NEC / Tokin
- Rodan
- RTI / Ketema
- Stetron International Inc.
- Therm-O-Disc
- Thermometrics
- Tokin
Transformers
- Etal/Profec
- IBS Transformers
- Pacific Transformer
- Premier Devices
- Pulse
- Sumida America
- Tamura
- Toko
Fuses
- Bell Fuse
- Cooper Bussmann
- IBS Fuses
- Littlefuse
- NEC
- Opti-Fuse
- San-O
- Schruter
Inductors
- AEM
- Cal-Chip
- Chillsen
- Etal/Profec
- Dale
- Delevan
- IBS inductors
- Gowanda
- JW Miller
- Johanson Technology
- Mag Layers
- TDK
- Samwha
- Toko
- Walsin
- Yageo
Resistors
- Allen Bradley / Rockwell Automation
- ASJ Components
- BI Technologies
- Bourns
- C.T.S.
- Clarostat
- Dale/Vishay
- Hi-Tech Resistor
- IBS Resistors
- IRC
- KOA
- Megitt
- Noble
- Ohmite
- Rockwell
- Phycom
- Piher International Corp
- RG Allen
- RCD Components
- Rohm
- S.E.I. Electronics
- Sincera
- Siegert
- Electronics
- Spectrol
- Tyco
- Venkel
- Vishay
- Vitrohm
- Walsin
- Welwyn
- Yageos
Thermistors/Thermostat
- Airpax
- Ametherm
- IBS
- GE
- Keystone Carbon Co.
- NEC / Tokin
- Rodan
- RTI / Ketema
- Stetron International Inc.
- Therm-O-Disc
- Thermometrics
- Tokin
Optical Fiber Cables
- Asahi
- Lucina
- Showa Electric
RF Coaxial Components
Attenuators
- Anritsu
- Radial
Splitters / Combiners
- AVX
- Murata
- Radia
Phase Trimmers
- Amphenol
Terminations
- Amphenol
- Anritsu
- Johnson Comp
- Radial
- Tyco M/A
RF Interconnect Components
Connectors
- 3M / Robinson Nugent
- AEP
- Amphenol RF
- Anritsu
- FCI
- Johnson Components
- Molex
- Radiall
- Tyco / AMP
Adapters
- Amphenol Adapters
- Anritsu
- Cambridge Products
- Johnson Components
- Radiall
- Tyco / AMP
- Cambridge Products
Relays & Delay Line
- American Zettler. Inc
- Aromat / Panasonic
- NEC
- Clare
- Omron
- Schrack
- Showa Electric
- Songchuan
- Sanyou
- Tyco / Potter Bromfield
Switches
- Alco
- 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
Thermal Conductor & Heat Sinks
- Aavid Thermalloy
- Coors Tek
- WakeField
- IERC / CTS
- R-Theta
Wire & Tubing
- 3M
- Alpha
- Barcel
- Belden
- Cableco
- Dearborn
- Essex Group
- Feller US Corp
- Gruber
- Manhattan / CDT
- Rubadue
- Raychem
- Sonic / Thermax
- Showa Electric
- Sumitomo
- Thermax
- Zeus