M/A-Com PHI
http://www.macom-phi.com
http://www.macom.com
power transistors

Macronix International
http://www.macronix.com
ROM, Flash, EPROM, video accelerator chips, networking chips, audio chips, CODECs, DSP chips

Maker Communications Equipment
http://www.maker.com
ATM chips

Mantech Ltd (Hong Kong)
http://www.mantech.com.hk
Sensores (NTC/PTC Thermistors, Humidity, Pressure, Gas, Strain Gage, Load Cell, NTC Probes,PTC Resetable Fuse, SMD Varistirs, Hall, Electronic Scale, Appl. circuit, ...

Marvell Semiconductor
http://www.marvell.com
mass storage chips, PRML chips

Matra MHS
see TEMIC

Matsushita
see Panasonic

Maxim
http://www.mxim.com - .......Home Page
http://www.maxim-ic.com  - Datasheets and new products!
http://para.maxim-ic.com  - Master Product Tree. All products search!
Amplifiers, Comparators, Data converters, References, Regulators, Interface chips, etc...

Maxtek
http://www.maxtek.com
high frequency MCMs

MCA Technologies
http://www.mcatech.com (link deactivated?)
signal conditioning chips

Media Vision Technology
see Aureal

Mediamatics
http://www.mediamatics.com
video chips, audio chips

Medianix Semiconductor
http://www.medianix.com
audio processors

Melcher
http://www.melcher-power.com
power converter modules

Melexis, Microelectronic Integrated Systems
http://www.melexis.com
microcontrollers, Hall Effect sensors, telecom chips

Metalink
http://www.metalink.co.il
transceivers, networking chips

Metelics
http://www.metelics.com
Schottky diodes, PIN diodes

Micon Design technology
/mdtichttp://members.xoom.com/mdtic
microcontrollers (PIC compatible)

Micrel Semiconductor
http://www.micrel.com
The Company's products include high performance analog, power, advanced mixed-signal and radio frequency semiconductors; high speed communication, clock management, Ethernet switch and physical layer transceiver integrated circuits. These products address a wide range of rapidly growing end markets including cellular handsets, portable and enterprise computing, enterprise and home networking, wide area and metropolitan area networks and industrial equipment.
Shortlist: PCMCIA chips, regulators, MOSFETs, display drivers.

Micro Electronics Corp.
http://www.microelect.com
transistors, LEDs

Micro Networks
http://www.mnc.com
amplifiers, data converters, clock chips, voltage controlled oscillators

Micro Power Systems
see Exar

Microchip Technology
http://www.microchip.com
EEPROM, serial EEPROM, EPROM, microcontrollers, rolling code chips

MicroClock
http://www.microclock.com
clock chips

Microcosm Communications
http://ourworld.compuserve.com/homepages/Microcosm_Communications
amplifiers, LED drivers, transceivers, clock chips

Microlinear
http://www.microlinear.com
networking chips, fiber optic chips, telephone chips, filters, mass storage chips, power controllers, battery management chips, LCD controllers, data converters, motor controller chips

MicroMetrics
http://www.micrometrics.com
diodes

Micron Technology
http://www.micron.com
DRAM, SRAM, Flash

Micronas Intermetall
http://www.intermetall.de
DSP chips, video chips, audio chips

Micropac Industries
http://www.micropac.com
hybrids

Microsemi
http://www.microsemi.com
rectifiers, regulators, transistors (MOSFET, Hi-Rel, IGBTs, RF), thyristors, controllers, sensors, drivers, photo detectors, power amplifiers and discrete transient voltage protection devices

Microtune
http://www.microtune.com
TV tuner chips

MicroUnity
http://www.microunity.com
multimedia processor

Mikron
http://www.mikron.ru
RAM, ROM, logic chips, gate arrays, data converters, GaAs chips

Mini-Circuits
http://www.minicircuits.com
amplifiers, termination chips, oscillators, frequency controller chips

MIPS Technologies
http://www.mips.com
RISC microprocessors

Mitel Semiconductor
http://www.mitelsemi.com
networking chips, CAM, mass storage chips, diodes, video chips, microcontrollers, keyless entry chips, gate arrays, SAW filters, cellular phone chips, analog switches, DTMF chips, telecom chips, GPS chips, PLL, compression chips, thyristors, etc...

Mitsubishi Semiconductor
http://www.msai.com
http://www.mitsubishichips.com
(no product info)

Mixed Signal Integration
http://www.mix-sig.com
filters, equalizing chips (for audio applications?)

MMC Networks
http://www.mmcnet.com
networking chips

Morphics Technology
http://www.morphics.com
(no product info)

Mosaic Semiconductor
see Syntaq

MOSAID
http://www.mosaid.com
(no product info)

Mosel Vitelic
http://www.moselvitelic.com
http://www.mosel-vitelic.com
DRAM, SRAM, VRAM

Mospec Semiconductor
http://www.mospec.com.tw
Schottky diodes, power transistors

MoSys
http://www.mosysinc.com
DRAM

Motorola
http://mot-sps.com
http://e-www.motorola.com/
http://design-net.com
microprocessors, microcontrollers, SRAM, DRAM, standard logic, networking chips, wireless chips, DSP chips, CODECs, LCD controllers, transistors, diodes etc...

Moxtek
http://www.moxtek.com/electronics/fet.htm
JFETs

MRV Communications
http://www.mrv.com
LEDs, laser diodes, photo diodes

M.S. Kennedy
http://www.mskennedy.com
motor control chips (hybrid), amplifiers (hybrid)

MSIS Semiconductor
http://www.msis.com (link deactivated?)
(no product info)

MSU
http://www.msu.co.uk
CD chips, networking chips

MTI
http://www.seed.net.tw/~viit/mngcmt/mti_e.html (link deactivated?)
amplifiers, satellite communications chips

MUR Murata Manufacturing Co., Ltd.
http://www.murata.com/
EMI Filters,Capacitors,Thermistors/Resistors,Coil/Delay Lines,Resonators, Power Supplies, Sensors,Microwawe Chips

Music Semiconductors
http://www.music-ic.com
CAM

MX-COM
http://www.mxcom.com
CODECs, telephone chips, voice chips

Mykotronx
http://www.rnbo.com/mykoweb/index.htm
cryptography chips

Mylex
http://www.mylex.com
PC peripheral chips (SCSI)

MystiCom
http://www.mysticom.com
ethernet chips