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- RAACO
- Rabbit Semiconductor
- Radial Magnet Inc
- Radiall
- Radios Inc
- RAF Electronic Hardware
- RAFI
- RALTRON
- Ramtron
- Rawl Fixings
- RAYCHEM
- RCD (RESISTORS COILS DELAYLINES)
- REAN
- REAN / Neutrik
- Reckmann
- Recom
- RECOM Lighting
- RECOM Power
- Recom Power Inc
- Rectron
- RED LION
- Red Lion Controls
- REDEL
- REDINGTON COUNTERS
- RELECO
- RENA
- Renaissance Mark
- Renata
- RENATA BATTERIES
- RENESAS
- Renesas Electronics
- Renesas Electronics America
- Renesas Electronics America/NEC
- Renesas Technology
- Renesas Technology America
- Renold
- RF INDUSTRIES
- RF MONOLITHICS
- RF Solutions
- RFM
- RFMD
- RHOPOINT
- RIA CONNECT
- RICHCO
- Richco Plastic Co
- RICHTEK
- Richtek USA Inc
- Riedon
- Riello
- Ripley Tool/Miller
- Rittal
- RK ROSE+KRIEGER
- ROAL ELECTRONICS
- ROEBUCK
- ROHM
- Rohm Semiconductor
- ROLEC
- Roman-Jones Inc
- Rose
- Rose+Bopla Enclosures
- ROSENBERG GMBH
- Roth Elektronik
- Rotronic
- Roving Networks
- Roving Networks Inc
- Rowley Associates
- ROXBURGH
- Roxburgh EMC
- RPM Systems Corp
- RS
- RUBYCON
- RUKO
- Ruland
- RADIOCRAFTS
- RAXXESS
- RAYOVAC
- RCA
- RCD Components
- RDI Electronics
- RECORD TOOLS
- REDPINE SIGNALS, INC.
- REDRING
- Regal Electronics
- Renata SA
- Rifa
- RIP-TIE
- River Eletec
- RNS
- Robt. G. Allen
- Rochester Electronics
- Roederstein / Vishay
- Rose Bopla
- Rubycon America
- Russell
- RADIO DESIGN LABS
- RAF
- RAWLPLUG
- Raytheon/Panel Prod.
- REDAPT
- Rip-Tide
- Robinson Nugent
- Rose+Bopla
- Rosenberger