C
- Califia
- congatec
- Comchip Technology
- Citizen FineDevice
- Cirrus Logic
- Cirque
- Cincon
- CCS
- CEL
- Chip Quik
- CONEC
- Central Semiconductor
- Chemtronics
- Cal Test
- C&K
- Caddock
- Caplugs
- Carling Technologies
- Cinch
- CTS Electronic Components
- Condor_SL Power
- Conxall_Switchcraft
- Crydom_Sensata
- Clarostat_Honeywell
- Coiltronics_Eaton
- Cypress Semiconductor
- CW Industries
- CUI
- CMOSIS_ams
- Crystek Corporation
- Crouzet
- Crocus
- Cree
- Coto Technology
- Cosel
- Cornell Dubilier_CDE
- Corcom_TE Connectivity