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.
- HA
Health Advisory
- Habitat
The specific surroundings within which an organism, a species, or a community lives. The surroundings include physical factors such as temperature, moisture, and light together with biological factors such as the presence of food or predator organisms. The term can be employed to define surroundings on almost any scale from marine habitat, which encompasses the oceans, to microhabitat in a hair follicle of the skin.
- HAL
Hardwired Array Logic
- Half life
The time taken by certain materials to lose half their strength. The time required for half of the atoms of a radioactive element to undergo decay. The time required for the elimination of one half a total dose from the body.
- Halons
A class of simple hydrocarbon derivatives in which bromine, chlorine and fluorine are substituted for some or all of the hydrogen atoms. These compounds are used mainly as fire-extinguishing gases, the two best known being Halon 1211 (CF2BrCl) and Halon 1301 (CF3Br). The chemicals are long-lived in the troposphere and are implicated in the depletion of the ozone layer.
- Handler
A mechanical device attached to an automatic testing or finishing machine which loads the parts one at a time.
- HAP
Hazardous Air Pollutant
- Hard surface
A photoplate coated with a relatively hard, non-emulsion coating that can be selectively etched to produce a photomask. Popular hard surface materials are chromium, chromium oxide, and iron oxide.
- Hardware
The physical components of a computer or an electronic system - as opposed to software, which is the term used to describe the programs and instructions for a computer.
- HASL
Hot Air Solder Leveling
Process to deposit uniform coating of solder on PCB's.
- Hazardous Waste Managemente
The systematic control of the collection, source separation, storage, transportation, processing, treatment, recovery, and disposal of hazardous wastes.
- HAZMAT
Hazardous Materials
- HAZOP
Hazard and operability study
- HBFC
Hydrobromofluorocarbon
- HC
Hydrocarbon
- HCB
Hexachlorobenzene
- HBM
Human Body Model
- HCCPD
Hexachlorocyclopentadiene
- HCFC
Hydrochlorofluorocarbon
- HCI
Hot Carrier Injection test
- HCl
Hydrogen chloride. Hydrochloric acid
- HCMOS
High-speed Complementary Metal Oxide Silicon
- HDCD
High-Density Compact Disk
- HDD
1) Hard Disk Drive
2) Halogenated dibenzo-p-dioxin
- HDF
Halogenated dibenzofuran
- HDH
Hardware Development Station
- HDL
Hardware Description Language
A kind of language used for the conceptual design of integrated circuits. Examples are VHDL and Verilog.
- HDLC
High Density Load Controller
- HDPE
High-density polyethylene
- HDSE
Hardware Development Station
- HDSL
High speed Digital Subscriber Line
- HDTV
High Definition TV
- HDX
Half DupleX
- HEA
Health Effect Advisories
- Headcount
The number of employees in an organization or assigned to an activity.
- Heat Sink
An assembly that serves to dissipate, carry away, or radiate into the surrounding atmosphere heat that is generated by an active electronic device.
- Heavy metals
Metallic elements like mercury, chromium, cadmium, arsenic, and lead, with high molecular weights. They can damage living beings at low concentrations and tend to accumulate in the food chain.
- HEPA filter
High-Efficiency Particulate Air filter
A specially constructed filter membrane that allows a high volume of air flow and stops small particles of some pre-determined size from passing through.
- HET
HETetodyne
- Hexamethyldisilizane
A chemical primer used to promote improved adhesion between the (HMDS) photoresist layer and the underlying surface.
- HF
1) High Frequency
2) Hydrogen Fluoride: hydrofluoric acid
- HFC
1) Hydrofluorocarbon
2) Hybrid Fiber Coax
Set-top Box field. Fiber, then coax to 500 homes.
- HFR
Hold For Release
- HFS
Hierarchical File System
- Hg
Mercury
- HI
Hazard Index
- HIC
Hybrid-Integrated Circuit
- High-pressure oxidation
A special pressure vessel contained inside a resistance heated furnace. This pressure vessel allows thermal oxidation to be done at raised pressure levels of 5 to 25 atmospheres.
- HII
Home Information Infrastructure
- Hillock
The displacement of a thin-film material that occurs when heated and cooled. Hillocks of aluminum are sometimes found in the aluminum interconnect metal on semiconductor devices.
- HINILC
HIgh-Noise-Immunity Logic
- HiQUAD
ST integrated circuit package identical in shape and size to the standard quad flat package but with greater power handling capacity.
- Hi-Rel
High Reliability
Hi-Rel assembly is a specific activity within Back-End. Products manufactured are mainly aimed at space applications.
- HI-VOL
High-volume air sampler
- HLRW
High Level Radioactive Waste
- HMD
Head Mounted Display
- HMDS
HexaMethylDiSizane
- HMIS
Hazardous Materials Information System
- HMOS
High-Performance MOS
A scaled, high-performance NMOS structure.
- HOCs
Halogenated Organic Compounds
- Hold
A temporary stoppage.
- Hole
The absence of a valence electron in a semiconductor crystal. The movement of a hole is equivalent to the movement of a positive charge.
- Holistic
Of or related to a view of the natural environment that encompasses an understanding of the functioning of the complete array of organisms and chemical-physical factors acting in concert rather than the properties of the individual parts.
- HP
Horse Power
- HPGL
Hewlett-Packard Graphics Language
- HPLC
High-Performance Liquid Chromatography
- HR
Human Resources
- HRC
Halon Recycling Corp.
- HRML
Hyper Text Markup Language
- HRS
Hazard Ranking System
- HSB
Hue Saturation Brightness
- HSDI
High Speed Direct injection
Automotive filed
- HSV
Hue Saturation Value
- HSWA
Hazardous and Solid Waste Amendments
- HTB
High Temperature Bake
- HTGR
High-Temperature Gas Reactor
- HTL
High-Threshhold Logic
- HTML
Hyper Text Markup Language
A text markup language widely used in the world-wide web. HTML indicates how a text is to be presented and includes the hypertext links that make it possible to navigate from one page to another.
- HTOL
High Temperature Operating Life Test
- HTTP
HyperText Transfer Protocol
The standard protocol for transferring hypertext files through Internet. This is the protocol most used on the world-wide web.
- HTTPS
Secured HTTP
- HUD
Head Up Display
Automotive filed.
- Humus
Organic matter in soil derived from the partial decomposition of plant and animal remains. Generally, the decomposition has proceeded sufficiently to make it impossible to recognize the original material.
- HV
High-Voltage
- HVAC
Heating, Ventilation and Air Conditioning
- HVACR
Heating, Ventilation, Air Conditioning and Refrigeration
- HVDC
High Voltage Direct Current
- HVIC
High Voltage Integrated Circuit
- HVPS
High Voltage Power Supply
- HW
Hazardous Waste
- HW/HWD
Hardware
- HWAT
Heptawatt
- HWM
Hazardous Waste Management
- HWM facility
Hazardous Waste Management facility
- HWR
Heavy-Water Reactor
- Hybrid Circuit
A microelectronic device consisting of both film circuits and semiconductor elements.
- Hydrofluoric Acid
A strong acid used to remove silicon dioxide. Generally it is mixed with ammonium fluoride for better etch-rate control.
- Hydrogen
A common gas used in semiconductor processing. One must be cautious of the explosive nature of hydrogen.
- Hyper link
A way of jumping to another place on the Internet. Hyper links usually appear in a different format from regular text. You initiate the jump by clicking the link.
- Hypertext
Documents with links to other documents. Click a link to display the other document.
- HYVs
High-Yelding Varieties
- Hz
Hertz (cycles per second)
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