- M3 Technology Inc. [M3Tek] buck and/or bust converters, LDOs, charger ICs
- M31 Technology Corporation silicon IP provider
- M3Tek [M3 Technology Inc.] buck and/or bust converters, LDOs, charger ICs
- M-Systems Flash Disk Pioneers Flash memory
- M/A-COM Technology Solutions [MACOM] RF ICs
• Wireless division acquired by Tyco Electronics [now TE Connectivity]
• microwave and radio frequency (RF) technology unit acquired by Cobham plc [Cobham Sensor Systems]
• Automotive Solutions unit acquired by Autoliv Inc.
• Mindspeed 'Comcerto' ARM network processor business unit acquired by Freescale Semiconductor
• Freescale merged with NXP Semiconductors
- Macroblock Inc. mixed-signals, LED drivers
- Macron Optoelectronics photoresistors
- Macronix International Co., Ltd. [MXIC] Non-Volatile Memory
- MacroTech Semiconductor [MTS] ASICs
• acquired by Simtek
• now Cypress Semiconductor Corp.
- Magic Leap Inc. retinal displays
- MagicPixel Inc. controllers
- Magillem
• acquired by Arteris Inc.
- Magis Networks, Inc. communication, wireless network
- Magma Design Automation Inc. chip design software
• acquired by Synopsys, Inc.
- Magna International, Inc. digital radars for autonomous mobility
- MagnaChip Semiconductor Corporation mixed-signal and digital multimedia semiconductors
- MagnaCom Ltd. wireless communications
• acquired by Broadcom Limited
- Magnatec power & audio semiconductors
• acquired by TT Electronics plc
- Magnum Semiconductor video and audio ICs
• acquired by GigPeak Inc.
• GigPeak Inc. acquired by Integrated Device Technology, Inc. [IDT]
• IDT [Integrated Device Technology, Inc.] acquired by Renesas Technology Corp.
- MagSil Corporation MRAMs
• out of business
- Maharishi Solar Technology Pvt. Ltd photovoltaics, Multicrystalline Silicon
- Maker Communications, Inc. communications
• acquired by Conexant Systems Inc.
- Malleable Technologies DSP
• acquired by PMC-Sierra
• PMC-Sierra acquired by Microsemi Corp.
• Microsemi Corporation acquired by Microchip Technology Inc.
- Malta Inc, a spin out of Alphabet Inc. energy storage
- Marconi Applied Technologies RF and semiconductor components
• now E2V Technologies
- Marelli Holdings Co., Ltd. automotive lighting and accessories
- Marki Microwave MMICs, RF chips
- Marktech Optoelectronics LEDs, epitaxial wafers
- Marl International Limited LEDs
- Marvell Technology Group Ltd. ethernet, fiber optics networks, embedded processors, SSD controllers
• multimedia business unit acquired by Synaptics Inc
• Wireless Connectivity business unit acquired by NXP Semiconductors
- Masimo Semiconductor epitaxy wafers, foundry services, thin film products
- Massana Ltd. DSP
• acquired by Agere Systems Inc.
• acquired by LSI Corporation
- MathStar Inc. ceased operation during 2008.
- Matra Harris
• acquired by Temic
• now part of Atmel
• Atmel acquired by Microchip Technology Inc.
- Matrix Orbital LCD displays
- Matrix Semiconductor Inc. OTP memories
- Panasonic Japan
• Chip Tantalum Capacitor Unit acquired by Nichicon
- Panasonic Semiconductor Solutions Co., Ltd. [PSCS]
• Diode and Transistor Business Line acquired by Rohm Semiconductor Inc.
• SOC Business Line acquired by Socionext Inc.
• Panasonic Semiconductor Solutions Co., Ltd. acquired by Nuvoton Technology Corporation
- Matsushita Seiko Co., Ltd. photovoltaics, Monocrystalline Silicon
- Maxchip Electronics Corp. foundry services
• a subsidiary of Powerchip Semiconductor Manufacturing Corp. [PSMC]
- Maxim Integrated Products Inc. A/D & D/A converters, opamps, interface ICs, supervisory ICs, voltage reference, wireless/RF
• RFID product line acquired by Intelleflex Corporation.
• telecom clock generation, synchronization, packet timing and synthesis business acquired by Microsemi Corp.
• Microsemi Corporation acquired by Microchip Technology Inc.
• Maxim Integrated Products Inc. acquired by ADI [Analog Devices Inc.]
- MaxLinear Corporation CMOS RF and mixed-signal ICs
• 12Gb/s SAS expander technology acquired by PMC-Sierra
• PMC-Sierra acquired by Microsemi Corp.
• Microsemi Corporation acquired by Microchip Technology Inc.
- Maxscend Microelectronics Company Limited DAB, DMB receivers, communications, RF frontend chips, SAW filters
- Maxtek Component Corp
• acquired by Tektronix Component Solutions
- MAZeT asics, optical sensors
• acquired by ams AG [austriamicrosystems AG]
- MBE Technology Pte Ltd. epitaxial wafers
- MCC [Micro Commercial Components Corporation] diodes, rectifiers, TVS
- MCD Electronics, Inc. LEDs
- MCE obsolete product replacement
- MCE OptoElectronics, Inc. optoelectronics
- MCE Technologies, Inc. microwave & RF
- McLaren Applied controllers, sensors
- MCNex Co., Ltd. camera modules
- MCS Logic speech, audio
- MCST [Moscow Center of SPARC Technologies] CPUs
- mCube Inc. MEMS motion sensors
• acquired by MediaTek Incorporation
- MDE Semiconductors [Micro Device Electronics Inc.] diodes
- MDT [Microwave Device Technology] GaAs & Si diodes, varactors, hyperabrupt varactors, PINs, Gunns, Schottky's and IMPATTs
• acquired by Microsemi Corp.
• Microsemi Corporation acquired by Microchip Technology Inc.
- MED [MicroEmissive Display] P-OLEDs
- Media Reality Technologies Inc. [MRT] LCD controllers
- Mediamatics MPEG
- MediaNix Semiconductor audio ICs
- MediaPhy Corp. multimedia communications, mobile TV Systems on Chip
- MediaTek Incorporation mobile communications & digital home solutions
- MediaQ Inc. video processing chips
• acquired by NVidia
- MegaChips Corporation (Japan) audiovisual, communications, sensors
• please check MegaChips Corporation too!
- Megawin Technology Co. Ltd. MCUs
- Megaxess audio power, communications, logic
- Megvii Technology Limited AI technologies, facial recognition
- MEI Semi Co., Ltd. diodes, transistors
- Meicer Semiconductor Inc. packaging services
- MeiYa Technology Corp. DRAMs
- MeiYa Technology Corporation Memories
• a subsidiary of Nanya Technology
- Melexis sensors, identification ICs
- Melfas Inc. touch controllers
- Mellanox Technologies Inc. communications
• acquired by NVidia
- MeltroniX packaging
- MEMC silicon wafers, foundry
• renamed to SunEdison (Silicon) silicon wafers, foundry
- Memoir Systems memory technologies
- Memory Card Technology memory cards
- MEMS Foundry Itzehoe GmbH [MFI]
• acquired by X-FAB Semiconductor Foundries AG mixed-signal wafer foundry
- Mems Technology Berhad [MemsTech] sensors
- MEMSCAP SA micro-electromechanical systems (MEMS)
- MEMSensing Microsystems Co. Ltd MEMS-based micro-devices
- MEMSIC Semiconductor Co., Ltd. sensors, hall switches
- Memsmart Semiconductor CMOS-MEMS accelerometers (g-sensors)
- MEMTECH memory based IP cores
- Menlo Microsystems, Inc. [menlomicro] RF switches, signal & power relays
- Menta S.A.S. eFPGA IPs
- Mentium Technologies Inc. Artificial Intelligence processors
- Merry Electronics Co., Ltd. microphones, MEMS microphone chips, miniatur speakers
- Merus Audio switching audio amplifiers
• acquired by Infineon Technologies AG
- Metagence Technologies DSP IP cores
- Metalenz Inc. optical sensing
- Metalink high speed transmission ICs
- Metalink Ltd.
• WLAN (Wireless Local Area Network) related assets and intellectual property (IP) acquired by Lantiq
- MetaRAM Inc. memory drivers
- Metawave Corporation automotive radar & antenna
- METCO [Muramoto Electron PCL.]
• Please check Muramoto Group too!
- Metelics diodes, varactors, MIS capacitors
• a subsidiary of Aeroflex Microelectronic Solutions
• Aeroflex Microelectronic Solutions acquired by Cobham Ltd. [Cobham Defense Systems division]
- Metis Engineering Ltd. sensors
- Metrodyne Microsystem Corp opto electronics, VCSELs
- MetroPhotonics optical networks
- MHS Electronics silicon foundry services
• acquired by Atmel Corporation
• Atmel acquired by Microchip Technology Inc.
- Miasolé CIGS thin-film solar cells
- MICLEDI Microdisplays BV microLED display modules
- Micralyne Inc. MEMs, thin-film components
- Micrel Inc. computer peripherals, voltage regulators, MOSFET, display drivers
• acquired by Microchip Technology Inc.
- Micro Analog Systems Oy [MAS] analog interfaces, Integrated Passive Devices (IPD)
- Micro Commercial Components Corporation [MCC] diodes, rectifiers, TVS
- Micro Electronics Corp. LEDs, phototransistors
• check Micro Electronics Corp. too!
- Micro Hybrids, Inc.
- Micro International transistors
- Micro Linear networking ICs, telecom ICs, video ICs
• Power Management Business acquired by Fairchild Semiconductor
• Fairchild Semiconductor International Inc. acquired by ON Semiconductor
- Micro Magic, Inc. RISC-V cores
- Micro Networks data converters, amplifiers
- Microbridge Technologies re-adjustable resistors (Rejustors™)
- Microchip Technology Inc. microcontrollers, serial EEPROM
• flash memories, NAND controllers, NAND drives acquired by Greenliant Systems Inc.
• advanced mobile touch technology assets and products acquired by SOLOMON Systech Ltd.
- MicroClock [ICS] clock synthesizers, Clock multipliers & dividers
• acquired by Integrated Circuit Systems [ICS]
- Microcosm Communications communications
• acquired by Conexant Systems Inc.
- MicroDisplay Corporation LCOS microdisplays
- MicroEmissive Displays [MED] microdisplays, P-OLEDs
- microFAB Bremen foundry, MEMS devices
- MicroGen Systems, Inc piezoelectric vibrational energy harvester (PZEH)
- Microlab/FXR microwave
• acquired by RF Industries
- MicroLinks Technology Corp. ASICs
- Micromem Technologies Inc. MRAM memories
- Micrometrics Diodes
• a subsidiary of Aeroflex Microelectronic Solutions
- Micromodul ASICs
- Micron Technology Inc. memories
• CMOS image sensors unit now Aptina Imaging
- Micron - Displaytech (Displaytech Inc.) FLCOS Microdisplays
- Micronas communications, microcontrollers, discrete semiconductors
• frame rate converter (FRC), demodulator and audio product lines acquired by Trident Microsystems
• Micronas acquired by TDK
- Micronix mixed-signals
• acquired by Clare now part of IXYS Corp.
• IXYS Corp. acquired by Littlefuse Inc.
- MicroOLED SA OLEDs
• acquired by PHOTONIS Technologies SAS
- Micropac [Mii] solid state relais, voltage regulators, optocouplers
- Micropelt GmbH peltier coolers, thermogenerators
- Microsemi Corp. rectifiers, voltage regulators, transistors, thyristors
• low-frequency RF bipolar transistor business acquired by Advanced Power Technology [APT]
• micro power products division acquired by AMI Semiconductor Inc. • acquired by ON Semiconductor
• certain assets of Microsemi Corporation's Broadband Wireless Division acquired by MaxLinear Corporation
• Microsemi Corporation acquired by Microchip Technology Inc.
- Microsol International photovoltaics, Monocrystalline Silicon
- Micross Components Bare Dies, Wafer Forms, Chip Level Passive & Packaged Parts
- Microtune Inc. broadband communications
• acquired by Zoran
• Zoran acquired by CSR [Cambridge Silicon Radio]
• CSR mobile business unit acquired by Samsung Electronics Co., Ltd.
- MicroUnity multimedia & broadband microprocessors
- Microvision Inc. display and imaging, projection display modules, MEMS scanner
- Microwave Device Technology [MDT] GaAs & Si diodes, varactors, hyperabrupt varactors, PINs, Gunns, Schottky's and IMPATTs
• acquired by Microsemi Corp.
• Microsemi Corporation acquired by Microchip Technology Inc.
- MicroWave Technology Inc. [MwT] amplifiers, GaAs FETs
• acquired by IXYS Corp.
• IXYS Corp. acquired by Littlefuse Inc.
- Mie Fujitsu Semiconductor [MIFS]
• acquired by UMC [United Microelectronics]
- MIFS [Mie Fujitsu Semiconductor]
• acquired by UMC [United Microelectronics]
- Mikron drivers, amplifiers, voltage regulators
- Mikron [JSC Mikron] wafers, ICs
- Mildex Optical Inc. optical lenses & touch panels
- Millennium Communication Co., Ltd. [M-Comm] VCSELs
- milliLab Co., Ltd. mmWave Radar sensors
- Millipore Microelectronics
• now Mykrolis Corporation
- Mimix Broadband GaAs MMICs
• acquired by M/A-COM Technology Solutions [MACOM]
- Mimos Semiconductor [MySem]
- Mimosa Networks, Inc. wireless broadband solutions
• acquired by RadiSys Corporation
- mimoOn communications
- Mindspeed Technologies Inc.
• acquired by M/A-COM Technology Solutions [MACOM]
• wireless infrastructure business acquired by Intel Corporation
• Comcerto® CPE communications processor business acquired by Freescale Semiconductor
• Freescale merged with NXP Semiconductors
- MinerEye AI technologies
- Mingoa Ltd. Ethernet OAM IP solutions
• acquired by Microsemi
• Microsemi Corporation acquired by Microchip Technology Inc.
- Mini-Circuits RF ICs
- MiniLogic Device Corporation Limited LCD drivers, voltage detectors, voltage regulators, DC-DC converters, motor drivers
- MIPS Technologies microprocessors
• once acquired by Imagination Technologies Group
• 2018 acquired by Wave Computing
- Mipsology SAS neural network computation engines
- Mira [Deutron Electronics Corp.] CMOS sensors
- Mirafra Technologies semiconductor design services
- MiraMEMS Sensing Technology Co., Ltd. capacitive linear accelerometers
- mirasol® Displays by Qualcomm displays
- Mirics Semiconductor Inc. RF communication
- Misensor Tech (Shanghai) Co., Ltd. magnetic reed switch, reed relay & reed sensor
- Mitel Semiconductor
• once Zarlink Semiconductor • acquired by Microsemi Corp.
• Microsemi Corporation acquired by Microchip Technology Inc.
- Mitsubishi Electric Corporation photovoltaics, Multicrystalline Silicon
- Mitsubishi Heavy Industries (Power Systems Division) photovoltaics, Amorphous Silicon Thin Film
- Mitsubishi Materials Corporation wafers
• acquired by Renesas Technology Corp.
• now Renesas Electronics Corporation
- Mitsubishi Semiconductor MPU, CPU, memory
• acquired by Renesas Technology Corp.
• now Renesas Electronics Corporation
- Mitsubishi Stone Semiconductor, Ltd. [MSSC]
• check Mitsubishi Semiconductors too!
• acquired by Renesas Technology Corp.
• now Renesas Electronics Corporation
- Mitsumi Electric Co., Ltd. semiconductors, connectors, coils
- MixComm Inc. wirelwss communications
• acquired by Sivers Semiconductors
- Mixed Signal Integration [MSI] ASICS, active filters, analog & mixed signals ICs
- Mixed Signal Systems [MS2] mixed signals
- Mixel, Inc. Analog/mixed-signal IP's, design services
- MKNet Corporation transceivers, controllers
- MLS Electronics LEDs, LED lamps, LED displays
- MMC Networks networking ICs
• acquired by AMCC [Applied Micro Circuits Corp.]
• now AppliedMicro
- mmTron Inc. MMICs
- Moai Electronics Corporation controllers
- Mobile Semiconductor SRAMs
• acquired by Nordic Semiconductor
- MobilePeak Systems wireless communications
• acquired by Spreadtrum Communications (Shanghai) Co., Ltd.
• Spreadtrum, a subsidiary of Tsinghua Unigroup called UNISOC TECHNOLOGIES INC.
- Mobileye N.V. System-on-Chips
• acquired by Intel Corporation
- Mobilian Corp.
• acquired by Intel
- MobiLink Telecom Inc. communications
• acquired by Broadcom
- Mobilygen Inc. multimedia processors
• Maxim
• Maxim Integrated Products Inc. acquired by ADI [Analog Devices Inc.]
- Mobis [Hyundai Mobis Company] automotive parts, including radars
- Mobius Microsystems Inc. CMOS harmonic oscillators
• acquired by IDT [Integrated Device Technology]
• IDT [Integrated Device Technology, Inc.] acquired by Renesas Technology Corp.
- Mobius Semiconductor Inc. data converters, ADPLLs, SerDes, DACs
- Mobiveil Inc. Silicon Intellectual Properties (SIP)
- Mobix Labs, Inc. RF and mixed signal components
- Modem-Art Ltd. processors
• acquired by Agere Systems Inc.
• acquired by LSI Corporation
- Modesat Communications Inc.
• acquired by Xilinx Inc.
- Modular Inc. AI software
- Module ASICs
- MOKSAN ELECTRONIC Co., Ltd. infrared diodes, LEDs
- Monnit Corporation wireless sensors
• Please check OEMSensors.com too!
- Monolith Semiconductor Inc. SIC schottky Diodes, SIC MOSFETs
• acquired by Littlefuse
- Monolithic Memories Inc. [MMI]
• acquired by Advanced Micro Devices [AMD]
• spun off as Vantis
• acquired by Lattice Semiconductor
- Monolithic Power Systems, Inc. [MPS] DC-DC converters, LDO regulators, Class D Audio Amplifiers, power drivers, High-Side Current Sense Amplifiers, OpAmps, White LED Drivers (Inductors and Charge Pumps), Battery Chargers
- Monolithic System Technology Inc. [MoSys] memories
• acquired by Synopsys Inc.
- Montage Technology Group Ltd. tuners, demodulators & receivers, memory interfaces
- Montalvo Systems Inc. media processor
• acquired by Sun Microsystems
- Moore Threads Technology Co. Ltd. Graphics Processing Units
- Moortec Semiconductor Ltd. On-Chip PVT Monitoring, voltage and temperature (PVT) sensors
• acquired by Synopsys Inc.
- MorethanIP GmbH communications and DSP technologies
- Morphics Technology, Inc. wireless communications
• acquired by Infineon Technologies AG
- Morpho Technologies Inc. reconfigurable DSP (rDSP) cores
- Morse Micro PTY. LTD. SoCs for Wi-Fi connectivity
- Mosaic memories
• acquired by APTA Group, Inc.
- Mosaid memories
- MosChip Semiconductor Technology Ltd. ASICs, communications
- Moscow Center of SPARC Technologies [MCST] CPUs
- Mosel Vitelic Inc. memories, photovoltaics
- Moser Baer Photovoltaic photovoltaics, Crystalline Silicon
- MOSIS [The MOSIS Service] prototyping and small-volume production service for VLSI circuit
- MOSPEC diodes, power transistors
- MoSys [Monolithic System Technology Inc.] memories
• acquired by Synopsys Inc.
- Motech Industries Inc. solar cells, photovoltaics
- Motech Solar photovoltaics
- Motia wireless communications
- Motorola M2M
• acquired by Telit Communications S.p.A.
- Motorola Semiconductor Products now Freescale Semiconductor, Inc. analog ICs, DSP, memory, microcontrollers, processors, RF ICs
• for opto electronics check QT Optoelectronics acquired by Fairchild
• Fairchild Semiconductor International Inc. acquired by ON Semiconductor
• for transistors, diodes, logics check ON Semiconductor
• LED and LED display product lines acquired by Everlight Electronic Co., Ltd.
• Freescale merged with NXP Semiconductors
- Movandi Corporation 5G and multi-gigabit connectivity applications
- Movea motion sensors
• acquired by InvenSense Inc.
• InvenSense Inc. acquired by TDK
- Movidia Ltd. wireless multimedia
• now Movidius Ltd.
• Movidius Ltd. acquired by Intel Corporation
- Movidius Ltd. wireless multimedia
• acquired by Intel Corporation
- Moxtek FETs
- MPS [Monolithic Power Systems, Inc.] DC-DC converters, LDO regulators, Class D Audio Amplifiers, power drivers, High-Side Current Sense Amplifiers, OpAmps, White LED Drivers (Inductors and Charge Pumps), Battery Chargers
- Mpulse Microwave diodes, varactors, transistors
- mqSemi AG Silicon Carbide MOSFETs and Silicon IGBTs
- MRT [Media Reality Technologies Inc.] LCD controllers
- MRV Communications communications
- M.S. Kennedy Corporation amplifiers, regulators
- MS2 [Mixed Signal Systems] mixed signals
- MSI [Mixed Signal Integration] ASICS, active filters, analog & mixed signals ICs
- mSilica mixed-signal power management ICs
- MSIS Semiconductor Inc. was manufacturing source for AMD's NMOS SRAMS & P-channel technology. Closed Website. Apparently out of business.
- MSK M.S.Kennedy hybrid ICs
- MStar Semiconductor Inc. mixed-mode ICs, multimedia, wireless communications
• acquired by MediaTek Incorporation
- MTBSolutions [MTBS] packaging
- MtekVision Co., Ltd. multimedia processors
- MTPV Corporation thermal photo voltaics
- MUEGGE GmbH industrial microwave products
- Multifractal Semiconductors communications, E-band transceivers
- Multigig Inc. clock and timing chips
- Multilink Technology Corporation communications, mixed-signal
- MultiX SA spectrometric X-ray detectors
- Muramoto Electron PCL. [METCO]
• Please check Muramoto Group too!
- Murata Electronics
• Supercapacitor Production Line acquired by CAP-XX Limited
- Murata Power Solutions
- Mushkin Enhanced Memory Systems
memories
• check Ramtron too!
- Music Semiconductors datacom ICs
• acquired by Micron Technology
- MwT [MicroWave Technology Inc.] amplifiers, GaAs FETs
• acquired by IXYS Corp.
• IXYS Corp. acquired by Littlefuse Inc.
- MX-COM RF ICs, modem ICs, codecs
- MY-SEMI Inc. LED drivers
- Mykrolis Corporation
- MynTahl Corporation buzzers, speakers, transducer
- Myrtle.ai AI & MAU accelerators
- MySem [Mimos Semiconductor]
- Myson Technology Inc. ethernet, LCD & CRT drivers, controllers
- Mysticom DSP, mixed-signals, communications
- Mythic Inc. AI technology
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