Radial Magnet
Radiall
Radiocontrolli
Radiocrafts
Radisys
RAF Electronic Hardware
RAFI
RainSun
RAIO Technology
Rakon
RALEC
Raltron Electronics Corporation
RAMAXEL
Ramtron
Raspberry Pi
Raychem
Raydium Semi
Rayex Electronics
RAYOVAC
Raytheon
RayVio
RCA
RCD COMPONENTS INC.
RCD
RDA Micro Electronics
RDC Semiconductor
RDI USA
Reactor-Micro
Realtek
REASUNOS
RECOM-Power
Rectron
Red Dot
Red Lion Controls
Redington Counters Inc
Redpine Signals Inc
Regal Beloit Corporation
RELPOL
Renata Batteries
Renco Electronics Inc
Renergy
Renesas Technology Corp
Rennsteig Tools Inc
Rep-avago
ResistorToday
RF Digital
RF Solutions
RF Star
RF360
RFaxis
RFE International Inc
RFIC
RFMD
RFsister
Richco
RICHPOWER
RICHTEK
Richwave
RICKY
RICOH
Riedon
Rigado
Rittal
RIVER(大河)
RK Rose+Krieger GmbH
ROAL Electronics
Rochester Electronics
Rockchio
ROCKCHIP
Rockwell Collins
ROCPU Switches
RODAN
ROFS
R&S(Rohde & Schwarz)
ROHM Semiconductor
RONES
RONGHE
ROQANG
Rosenberger
Roth Elecronik GmbH
Rotronic
RPM Systems
RRC power solutions
RS Components Ltd
Rubycon
RUILON
RUIMENG
Runjet
RushUp
RYCHiP
RZC(瑞之辰)