A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Strictly speaking, a semiconductor is a material with an electrical conductivity between that of an insulator and that of a conductor. Semiconductors can be single elements such as silicon or germanium or compounds such as gallium arsenide or indium phosphide. In day to day usage, however, the term "semiconductor" more frequently refers to the components manufactured from semiconductor materials.
- M5
8" fab in Catania. It is the third 8" fab built by ST.
- MAC
1) Maximum Allowable Concentration
2) Media Access Control
Type of LAN switch output (20 Mbps).
3) Multiplexed Analog Components
TV application
4) Apple Macintosh
- MCP
Multi-chip package
- MACT
Maximum Achievable Control Technology
- MAFE
Modem Analog Front-End
Integrated circuit which includes all of the analog functions needed to build a modem circuit. These functions include A/D and D/A converters, filters...
- Mail reflector
Computer that replies automatically to e:Mail messages, returning information to anyone who sends a message to the mail reflector address. In some cases the reflector expects an empty message and sends the same reply to everyone. In others the sender must include certain key words in the message subject. In this case the response depends on the key words.
- Majority carrier
The mobile charge that predominates in a semiconductor material. Electrons in N-type material and holes in P-type material.
- Making the rounds
The approach to internal marketing research in which a specialist is assigned to contact those departments which are significantly impacted by a project undergoing planning. Also, visiting each customer to secure input for planning purposes.
- Malta
Island in the Mediterranean sea where ST Kirkop assembly plant is located.
- Manufacturing margin
Profit remaining after deducting from sales the cost of manufacturing products (F/E + B/E + shipping costs).
- Manufacturing variation
Difference between the actual cost of manufacturing a product and its WWS (Worldwide Standard value).
- MAP
Mold Array Process
- MAPI
Microsoft Mail Application Programmer Interface MDN Message Disposition Notification
- Marlow
Small town west of London, England. Location of the headquarters of ST's North Europe commercial organization and a local design center.
- MASK
In semiconductor manufacturing, many wafer processing steps use photolithography. The photographic "negatives" for these steps are called masks.
- Masking
In semiconductor technology, a pattern of opaque images to mask out selected areas on silicon slices so subsequent etchings or diffusions will affect only selected areas.
- Mask shop
Department where masks are made from the pattern generation tapes.
- Mask trimmer
A device that uses bursts of laser energy to vaporize and remove unwanted opaque areas or spots on a photomask or reticle.
- Mass balance
A quantitative accounting of the distribution of chemical in plant components, support medium, and test solutions. It also means a quantitative determination of uptake as the difference between the quantity of materials entering a process/site, the quantity leaving the process/site, and the quantity adsorbed to the process/site.
- Mass Flow Controller
A gauge consisting of a mass flow meter, an electronic controller and a valve that can control the rate of flow of a gas.
- Master Plate
Original photomask generated by a step-and-repeat camera or e-beam system, used to print submasters or working plates.
- MAT
MATurity (code)
- MATC
Maximum Acceptable Toxicant Concentration
- Maturity
The status of a product or a technology. The life cycle of all products and technologies is governed by a procedure which defines different levels of maturity for various phases in the cycle.
- MAX
MAXimum
- MAX220
MAXium 220 pkg
- MIB30 Index
The index which comprises the 30 leading stocks on the Milan Stock Exchange, based upon market capitalization and liquidity.
- MBAS
Methylene-Blue-Active Substances
- MGBA
Micro Ball Grid Array
- MicroBGA
Very small Ball Grid Array from Tessera
Trademarked name often (wrongly) used generically.
- Mbit
Megabit
- MBNQA
The Malcom Baldridge National Quality Award
Annual Award to recognize companies that excel in Quality Management and Quality Achievement (USA). ST Americas won the Malcom Baldrige in 1999.
- MBO
Management By Objectives
- MBPS
Million Bytes Per Second
- MBWA
Management By Walking Around
- MCA
Micro Channel Architecture
Open bus for midrange computers.
- MCBF
Mean Cycles Between Failures
Obtained by dividing Mean Time Between Failures by the length of time required to complete one operating cycle.
- MCC
1) Multivariate Control Chartse
2) Multichannel Memory Controller
- MCDC
Minimum Cost Digital Camera
- MCF
Methyl chloroform
- MCL
Maximum Contaminant Level
- MCLG
Maximum Contaminant Level Goal
- MCM
Multi-Chip Module
- MCU
MicroController Unit
- MCW
Modulated Continuous Wave
- MD
Mini Disk
- MDAC
Multiplying Digital to Analog Converter
- MDCS
Manufacturing Document Control System
- MDK
MPEG Developers Kit
- MDL
Method Detection Limit
- MDQ
Market Driven Quality
- MDS
1)Microprocessor Development System
2)Modulation Diodes Schottky
- MDV
Modulation Diodes/rectifiers
- MECL
Motorola Emitter Coupled Logic
- Mechanical yield
The percentage of parts which are good after the packaging operations. This is normally close to 100% because there is a small loss caused by faulty assembly.
- MEDEA
Micro Electronic Development for European Applications (the continuation of JESSI)
- Medium
Plural of the word "media".
A term used in the environmental field to describe the various "compartments" into which the natural world can be divided. The major media are: air, water, soil and biota. These in turn can be subdivided: air into the various compartments of the atmosphere, water into surface waters (which can be further sub-divided into fresh waters and saline waters) and groundwater, biota into plants and animals.
- Mega
A prefix meaning a multiple of one million.
- MEI
Most Exposed Individual
- MEK
Methyl Ethyl Ketone
- Melanoma
Cancer of the skin.
It is associated with overexposure to the shorter wavelengths of UV present in sunlight, generally screened out by the ozone layer. In this form, it normally occurs on those parts of the body which are most exposed to sunlight. Another form of melanoma skin cancer occurs on parts of the body which are generally never exposed to sunlight.
- MEM
Micro Mechanical Machining
- MEMS
Micro-Electro-Mechanical System
MEMS devices can use electrostatic techniques to convert an applied voltage into physical movement. The electrostatic method is particularly suitable for hard disk drive applications as it does not involve generation electromagnetic fields near the disk surface.
- Memory
A general term for computer hardware that holds infon-nation in electrical or magnetic form.
- MEO
Medium Earth Orbit
Satellite that is 5 to 10 Kmiles above Earth (Geostat=23 Kmiles)
- MEP
Motion Estimation Processor
- meq/l
Milliequivalents per liter
- Mercury (Hg)
One of a group of metallic elements classified as heavy metals. Mercury is the only metal that is a liquid at room temperature. Unlike most other metals, mercury tends to form covalent bonds with other inorganic materials as well as organic compounds. Elemental (metallic), inorganic (ionic), and organic forms of the mercury are released into the environment through natural and anthropogenic sources. The latter include mining, smelting, and industrial discharges. The burning of coal and the refining of petroleum continue to be important sources. Once released into the environment, the element can undergo many transformations and conversions among the three major forms given above. The most common human exposures to elemental mercury are by the inhalation of vapor. The element is rapidly absorbed and distributed by the circulatory system. Absorption of mercury from the gastrointestinal tract is very limited for elemental mercury but very high for organic forms of the element. Mercury is excreted slowly from the body, with about one-half of an absorbed dose being lost in 30 to 90 days. That part of the human body most sensitive to mercury poisoning is the central nervous system.
- MES
Manufacturing Execution System
The system for execution management.
- MESFET
Metal Schottky FET
A field effect transistor whose gate structure consists of a metallic Schottky barrier.
- Metal-Gate MOS
MOS devices with a metal layer deposited to form the gate elements.
- Metal layer
A layer of aluminum or, in some cases, copper, used to connect all the transistors of a silicon chip together. As chips become more and more complex, the number of layers needed increases so the chip can be made as small as possible.
- Metal Mask
The photomask used to define the metal interconnects in an IC.
- Metallization
Metallization is the process of depositing a thin film of metal and patterning it to form the desired interconnection arrangement.
- METH
Methylene chloride
- Methane (CH4)
A gaseous hydrocarbon that is the main component of natural gas; the molecule contains a single carbon atom bonded to four hydrogen atoms. It is highly explosive. It is plentiful in nature, where huge fields of natural gas exist, either together with or separate from crude oil deposits. It is also often present wherever anaerobic decomposition of organic material occurs. In this respect, it is a primary component of "marsh gas", which is generated in the mud of marsh-lands. This is also the reason for its presence in biogas, of which it is an important component. Methane is considered a greenhouse gas and plays a part in the depletion of stratospheric ozone.
- MF
Macro Family
- MFC
Mass Flow Controller
- Mfg
Manufacturing
- MFLOPS
Millions of FLoating point Operations Per Second
- MFM
Modified Frequency Modulation
- MFP
1) Monitor Flat Panel
2)MultiFunction Printer
- MFT
MultiFunction Timer
- mg
milligram
- mg/kg
milligram per kilogram
- mg/l
milligrams per liter
- MGV
Montgomeryville
ST site in Pennsylvania, USA.
- MHP
Multimedia Home Platform
- MHz
MegaHertz
- MIBK
Methyl isobutyl ketone
- MIC
Microwave Integrated Circuit
- Microcomputer
A microprocessor complete with stored program memory (ROM), random-access memory (RAM), and input/output (1/0) logic. Microcomputers are capable of performing useful work without additional supporting logic. If all functions are on the same chip, this is sometimes called a microcontroller.
- Microcontroller
A microcontroller is an integrated circuit that combines a microprocessor with other peripheral functions, such as memories, timers and converters.
- Micrometer
One-millionth of a meter. About 40 millionths of an inch. Synonymous with micron.
- Micron (("µ" "µm"))
A thousandth of a millimeter - about one tenth the thickness of a human hair.
- µg
microgram
- µg/kg
microgram per kilogram
- µg/l
microgram per liter
- µg/m3
micrograms per cubic meter
- µg/l
microliter
- µm
micrometer
- Microprocessor
A microprocessor is a hardware device that can be electrically "rewired" by using different software instruction. It is considered the brain of a computer or circuit.
- MIDAS
Manufacturing Integration Demand & Availability Systems
The communication link between planning and execution systems.
- MIDI
Music Instrument Digital Interface
- Mil
One-thousandth of an inch. Equal to 25.4 microns.
- Miller Indices
A set of three integers used to define a set of parallel planes. The integers are derived from the coordinate system of the basic vectors.
- Milli
A prefix meaning one-thousandth.
- MIME
Multipurpose Internet Mail Extensions
- MIN
MINimum
- Minority Carrier
The non-predominant mobile charge carrier in a semiconductor. Electrons in P-type material and holes in N-type material.
- Minimum Geometry
The smallest line width or spacing between lines or features on a semiconductor die. May be defined "as drawn" or "as printed."
- MIPS
Millions of Instructions Per Second
- MIR
1) Method Improvement Recommendation
A formalized system for encouraging employee suggestions for improvement.
2)Maximum individual risk
- MIS
1) Management Information Systems
2) Metal Insulator Silicon
- Mission
The purpose of a business, a company, a division, a department or an agency. It is not so much "what is our business or function" as "why is our particular business or function".
- Mixing
Quality problem where wrong parts are shipped to customer.
- MKTG
Marketing
- ml
milliliter
- ML
Maximum Likelihood
- MLC
Multi-Layer Ceramic
- MLP
Micro Lead Package
- MM
1) Machine Model
2) Material Management (SAP)
The system that manages raw materials in ST.
- MMCA
Multi Media Card Association
- MMDA
Multichannel Multi point Distribution System
- MMDS
Multichannel Microwave Distribution Channel
Wireless cable
- MMMF
Man-Made Mineral Fiber
- MMIC
Monolithic Microwave IC
An analog IC with on-chip inductors and capacitors designed to work at microwave frequencies.
- MMOD
MicroMODule.
- MMP
Multiple Memory Products
- MMU
Memory Management Unit
- MMX
MultiMedia eXtension
MPU instruction extension for easier interface (Modem).
- MNOS
Metal Nitride Oxide Semiconductor
The dielectric between metal and semiconductor is fabricated from silicon nitride. This technology is commonly used to make EEPROMs.
- MO
1) Master Oscillator
2) Magneto Optical technology
- Mobility (Hole or Electron)
The rate with which a carrier (majority or minority) moves within a material under the influence of an electric field.
- Model
A simplified representation of an object or natural phenomenon used to allow estimates to be made of the behavior of the actual object or phenomenon when the values of certain variables are changed. The model can be described in many possible ways: a set of equations or a physical, miniature version of an object or system. Important environmental models include those estimating the transport, dispersion, and fate of chemicals in the environment. They are especially important for estimating transport, dispersion and fate of chemicals emitted into the atmosphere.
- MODEM
MOdulator DEModulator
Circuit used to convert digital information into tones which can be transmitted over a normal analog telephone line.
- MOE
Margin Of Exposure
- Molding
Mechanical protection, in the injection process of thermosetting polymer, for interconnection level.
- Molecule
An aggregate of two or more atoms of a substance that exists as a unit.
- Monitoring
Sampling and analysis of air, water, waste, soil, plants, wildlife and so on, to determine the concentration(s) of contaminant(s). Monitoring may be performed on the actual air, water or waste streams being released into the environment, to determine how much of the contaminants of concern is being emitted into the environment, or it may be performed in the media of interest - the atmosphere, surface waters, soil, plant and wildlife - to determine how much these media are already contaminated.
- Monitoring well
A well drilled into groundwater to determine and track its contamination.
- Monochromatic Light
A single wavelength of light energy.
- Monolithic Device
A device whose circuitry is completely contained on a single die or chip.
- Montreal Protocol
An international environmental agreement (reached in 1987 and amended several times after) which aims to reduce and eventually eliminate the emissions of man-made ozone depletion substances.
- MOS
1)Metal Oxide Semiconductor
This is one of the basic technologies used to manufacture integrated circuits, where electrical charges are carried by conduction.
2)Margin Of Safety
- MOSFET
Metal Oxide semiconductor Field Effect Transistor
- MoST
Multiple Optimized Super flash Technology
- Mostek
Precursor company of ST. Based in Carrollton on the outskirts of Dallas, Texas (USA).
- MOV
Metal Oxide Varistor
- MOU
Memorandum of Understanding
- MP
Melting Point
- MPC
Maximum Permissible Concentration
- MPD
Maximum Permissible Dose
- MPEG
Motion Pictures Experts Group
A committee belonging jointly to the International Organization for Standardization (ISO) and the Comité Consultatif International Télégraphique et Téléphonique (CCITT). Including representatives of electronics companies, like ST, and broadcasting organizations. It defines standards for the "compression" of digital video signals for consumer products and computers.
- MPEG1
First MPEG standard. Defines compression standard for bit rates up to 1.2Mbits and is used in CD applications.
- MPEG2
Evolution of the MPEG1 standard, aimed at broadcast TV. The main differences are the higher bit rate of the compressed data stream and support for interlaced images.
- MPG
Memory Products Group
ST group of divisions which manages, develops and markets semiconductor memories and related products.
- Mph
Miles per hour
- MPP
Massive Parallel Processor
Processing technique for Super computers.
- MPS
1)Management Procurement System
2) Master Production Scheduling
- MPU
Microprocessor Unit
Sometimes used as a synonym of the word microprocessor.
- MR
Magnetic Resonance
- mrem
millirem
- MRIE
Magnetron Reactive Ion Etch
The use of magnet to shape the ion field of etchant molecules in a reactive ion etch system.
- MRP
Material Requirements Planning
- MRS
Management Reporting System
- MS
Mass Spectrometer
- MS-DOS
MicroSoft Disk Operating System
- MSB
Most Significant Bit
- MSDS
Material Safety Data Sheet
- MSI
Medium-Scale Integration
A term generally applied to integrated circuit chips containing 30 or more transistors, but less than 1,000.
- MSO
Media Service Operator
- MSOP8
Mini SOP8
- MSQ
MultiSeQuencer
- MSR
Monolithic Switching Regulators
- MSS
1) Modulation Switching Schottky
2) Master Sheet Specification
- MSW
Municipal Solid Waste
- MTA
Message Transfer Agent
- MTBA
Mean Time Between Assists
- MTBE
Methyl Tertbutylether
- MTBF
Mean Time Between Failure
A maintenance indicator.
The time between two failures on a piece of equipment (calculated).
- MTD
1) Month To Date
The quantity (or value) produced or sold since the beginningw Roman">of the month.
2) Maximum Tolerated Dose
- MTL
Merged Transistor Logic
- MTS
Multichannel TV Sound (stereo TV)
- MTTF
Mean Time To failure
The expectation of the time to failure.
- MTTP
Maximum Total Trihalomethane Potential
- MTTR
Mean Time To Repair (or recover)
Average time spent to repair a piece of equipment which went down.
- MTU
Mobile Treatment Unit
- MTV
Modulation TV diodes/rectifiers
- Muar
Site of ST assembly plant in Malaysia.
- Multimedia
Loose term generally used to describe anything where different "media" (sound, picture, text and so on) are combined. It could even be used for a synchronized slide show and sound tape, although it is never used for movies and TV where the inclusion of sound is taken for granted. Today it is mainly used in connection with computer hardware and software that add sound and video to text and graphics.
- Multiwatt
Power IC package invented by SGS in the late 70s. Registered trademark.
- MUSE
Multi-User Simulated Environment
- MUTA
Mutagenicity
- MUX
Multiplexer
- MW
Molecular Weight
- MWAT
Multiwatt
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