- R2 Semiconductor
- R&E drivers, CMOS4000
- RAAAM Technologies high-density on-chip SRAMs
- Rabbit Semiconductor microprocessors
• acquired by Digi International Inc.
- Racyics GmbH System-on-Chip design services
- RAD networking ICs
- Radar Iron Ltd.
- Radia Communications Inc.
• acquired by Texas Instruments Incorporated.
- Radiant Opto-Electronics Corporation backlight modules
- Radiata network communications
• acquired by Cisco Systems
- Radiocomp Inc. RF systems and components, IP cores
- Radiometrix Ltd radio modules
- Radiospire Networks Inc. wireless communications
• operation shut down on April 21st 2009.
- RadiSys Corporation controllers for embedded applications
- Radium Semiconductor, Inc. display drivers
- RafaelMicro [Rafael Microelectronics Inc.] wireless RF communication ICs
- Rain Neuromorphics AI, artificial intelligence chips
- Raithlin Semiconductors LDPC decoders
- Ralink Technology Corp. wireless communications
• acquired by MediaTek Incorporation
- Rambus Inc. memories
- Ramtron memories
• acquired by Cypress Semiconductor Corp.
- Rancho Technology Inc. SCSI
- Rangduru Inc. One-Time Programmable Non-Volatile Memory chips & IPs
- RangeAnt antennas
- RANOVUS Inc. optical communications
- Rapid Bridge LLC LiquidCells
• acquired by Qualcomm Inc.
- Rapidus Corporation. logic semiconductor devices & ICs
- Raqia Networks Inc. systems-on-a-chip, co-processors
- Raztec (New Zealand) Limited Hall Effect current sensors
- Raychem Circuit Protection surge protectors
• a unit of Tyco Electronics [now TE Connectivity]
- Raycom Co., Ltd. broadband communications
- Raydium Semiconductor Corporation Drivers, Buffers and TCONs for TFT/LCDs
- Raystar Optronics Inc. OLED display modules, LCD displays
- Raytheon
• for Semiconductor check Raytheon Microelectronics Spain
• for RF networking check Systemonic AG
• Raytheon merged with United Technologies into Raytheon Technologies Corp.
- Raytheon Technologies Corp.
- Raza Microelectronics Inc. [RMI®] processors
• acquired by NetLogic Microsystems Inc.
- RC Module RISC DSP processors and cores
• known as Module
- RCA
• acquired by Harris
• now part of Intersil
- RD Graphene 3D graphene foam
• renamed to Integrated Graphene Ltd.
- RDA Microelectronics Inc. RF communications
• RDA Microelectronics, a subsidiary of Tsinghua Unigroup called UNISOC TECHNOLOGIES INC.
- RDC Semiconductor Co., Ltd. RISC processors
- Reach, Inc. wireless power-at-a-distance solutions
- Realtek Semiconductor audio ICs, controllers, telecom ICs, networking ICs, video controller ICs
- REC Solar Holdings AS (REC Group) mono-crystaline panels
• acquired by Reliance New Energy Solar Ltd [RNESL] a wholly owned subsidiary of Reliance Industries Ltd [RIL]
- Recogni Inc. AI-powered vision recognition modules
- Recticon Enterprises Inc. wafers
- Rectron diodes
- Red Semiconductor Ltd. microprocessors
- RedCat Devices srl. [RCD] radiation hard SRAMs
- RedEye Biomedical Inc. optical hemoglobin sensors
- RedMere Technology Inc. wired communications
• merged with Spectra7 Microsystems
- Redpine Signals Inc. wireless communications, Wi-Fi® processors
• Bluetooth and Wi-Fi business lines acquired by Silicon Laboratories Inc. [Silicon Labs]
- RedSwitch, Inc. programmable switches
• acquired by Agilent Technologies Inc.
• now Avago Technologies
• for LEDs and Dislays please check Avago Technologies Lighting too!
- REDTREE Solutions turnkey asic services
- Redux communications
- Reining International Ltd.
• acquired by ZMD
• ZMD acquired by IDT [Integrated Device Technology, Inc.]
- Reliance New Energy Solar Ltd [RNESL] solar panels
- Rendition graphic controllers
- Renesas Semiconductor Europe (Landshut) GmbH now Landshut Silicon Foundry [LFoundry]
- Renesas Electronics Corporation
• LTE-related assets acquired by Broadcom Limited
• LCD driver IC unit acquired by Synaptics Inc.
• IGBTs, mosfets and piezoelectric MEMS factory bought by Rohm Semiconductor Inc.
• Edge computing solutions business acquired by EnOcean GmbH
- Renesas Technology Corp.
• now Renesas Electronics Corporation
• high-power amplifier business acquired by Murata Electronics
- ReneSola [SOLAR ENERGY SOURCE Co., Ltd. ] monocrystalline wafers, multicrystalline wafers
- Refond [Shenzhen Refond Optoelectronics Co., Ltd. ] LEDs
- ResoCator Inc. miniature atomic clocks
- Resonac Holdings Corp. [former Showa Denko] SiC epitaxial wafers
- Resonant Inc. acoustic wave RF filters
- Resonext Communications Inc. wireless local area Networks, WLANs
• acquired by RF Micro Devices
• RF Micro Devices merged with TriQuint Semiconductor Inc. to form Qorvo Inc.
- ReVolt Technology AS rechargeable zinc-air batteries
- REX Computing, Inc. processors
- Rexchip Electronics Corp. DRAMs
• acquired by Micron Technology Inc.
- REYAX Technology Co., Ltd. antennas & antenna modules
- RF Engines Ltd. [RFEL] IP & System-Level Cores
- RF Magic Inc. radio frequency integrated circuits
• acquired by Entropic Communications
- RF Micro Devices amplifiers, receivers, transceivers, modulators
• RF Micro Devices merged with TriQuint Semiconductor Inc. to form Qorvo Inc.
• molecular beam epitaxy (MBE) wafer growth facility acquired by IQE plc
- RF Monolithics Inc. [RFM] RF transceivers, RF transmitters, RF receivers, SAW filters, SAW resonators and oscillators
• acquired by Murata Electronics
- RF Nano Corporation carbon nanotube analog electronics technology
- RF Nitro Communications Inc. communications
• acquired by RF Micro Devices, Inc.
• RF Micro Devices merged with TriQuint Semiconductor Inc. to form Qorvo Inc.
- RF Solutions Inc. communications
• acquired by Anadigics
- RFaxis Inc. RF communications
- RFDomus Inc. DSP & GPS cores
• acquired by GloNav Inc.
- RFEL [RF Engines Ltd.] IP & System-Level Cores
- RFHIC Corporation GaN based RF & Microwave devices
- RFID-DOMINANT Semiconductors Sdn Bhd. RFID tags
- RFWaves LTD. transceivers
• acquired by Vishay Intertechnology Inc.
- Richnex Technology Co., Ltd. WUSB (wireless USB), video decoders
• a subsidiary of Richtek Technology Corporation
- Richtek Technology Corporation voltage regulators, DC/DC converters, LED drivers
• acquired by MediaTek Incorporation
- RichWave Technology Corporation RF amplifiers and switches, wireless communication ICs
- Rockley Photonics Ltd. optical components, transceiver, sensors
- Ricoh power ICs, real time clock ICs
- Rigado Inc. IoT ICs
• Bluetooth modules business acquired by u-blox ag
- Rim Semiconductor communications
- Riot Micro Inc. wireless IoT chips
• acquired by STMicroelectronics
- Rise Technology x86 cpu solutions
- RISIN Technology Incorporation [RISINTECH] touch controllers
- Rising-Sun Co. [Shaoxing] diodes, rectifiers
- RISINTECH [RISIN Technology Incorporation] touch controllers
- RiTdisplay Corporation OLED, PMOLED panels, high-power batteries
• a subsidiary of Ritek
- Ritek OLED, PMOLED panels, high-power batteries
• please check RiTdisplay Corporation too!
- Rivet Networks communications
• acquired by Intel Corporation
- RivieraWaves wireless Intellectual Property (IP)
• acquired by CEVA Inc.
- Rivos Inc. processors
- RMI® [Raza Microelectronics Inc.] processors
• acquired by NetLogic Microsystems Inc.
- Robert Bosch GmbH [Bosch] monocrystalline and polycrystalline silicon solar cells, MEMS (Micro Electro Mechanical System) sencors
- RoboSense [Suteng Innovation Technology Co., Ltd.] lidar sensors
- Rochester Electronics discontinued semiconductors
- Rock Semiconductor Co., Ltd. power management & multimedia signal processing
- Rockchip Electronics Co., Ltd. digital audio processors, digital tuning radio controllers, multimedia processors
• please check Fuzhou Rockchip Electronics Co., Ltd. too!
- RocketChips transceivers
• acquired by Xilinx
- Rockley Photonics Ltd. photonics chips, sensors
- Rocktech Displays Limited LCD display modules
- Rockwell
• now Conexant Systems Inc.
- Rockwood Wafer Reclaim wafer processing services
- Rogue Valley Microdevices MEMS foundry, silicon & solar wafers, PECVD & LPCVD processing, dielectric and conductive thin films
- Rohm Semiconductor Inc. transistors, diodes, FPGA, microcontrollers, memories, communication ICs, multimedia ICs, hybrid ICs, IrDA, regulators
• or Rohm Semiconductor Inc. [Japan] too!
• Multilayer Ceramic Capacitor Product Lines acquired by Murata [Japan]
- Rolltronics Inc.
- Roswell Biotechnologies Inc. molecular electronics biosensors
- Roving Networks Inc. wireless communications
• acquired by Microchip Technology Inc.
- Royole Corporation flexible OLED displays
- RSI ID Technologies RFID Tags
- RTX Telecom A/S communications
- Rudolph Technologies, Inc.
- Runcom Technologies Ltd. communications
- Ronghui Optoelectronics Co., Ltd. [Shenzhen] LEDs
- Ruttonsha International Rectifier Ltd. diodes
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