Category: Glossary

One or more optical fibers enclosed within protective covering(s) and strength members.

A thermal unit. A calorie is that amount of heat required to raise the temperature of one gram of water, one degree centigrade.

A printed circuit board of smaller dimensions is commonly referred to as a card. A card is generally one level lower than the printed circuit board in the hierarchy of packaging. A card is also referred to as a daughter board.

A substance which markedly speeds up the cure of an adhesive when added in minor quantity as compared to the amounts of the primary reactants.

Often used to describe high-quality audio, CD-quality audio, or short-wavelength lasers; CD Laser.

A scale of temperature which features 0° and 100° as the freezing and boiling point of water respectively. To convert centigrade to Fahrenheit multiply by 1.8 and add 32, e.g., (100°C x 1.8) + 32 = 212°F.

1/100th of a poise; (dyne-sec/cm2); a viscosity measurement unit.

A cleaning technique that uses water as the primary cleaning fluid.

Antireflection coating. A thin, dielectric or metallic film applied to an optical surfa to reduce its reflectance and thereby increase its transmittance. ArmorA protective layer, usually metal, wrapped around a cable.

A mounting configuration for a TAB frame to an IC where the inner leads are connected to bumps in an array pattern on the surface of the IC instead of on the perimeter, which is the case for typical TAB components.

A group of elements or circuits arranged in rows and columns on a substrate

The exposure of product to cyclic laboratory conditions involving changes in temperature, relative humidity, and ultra violet radiant energy, with or without direct water spray, in an attempt to produce changes in the material similar to those observed after continuous outdoor exposure. Note-The laboratory exposure conditions are usually intensified beyond those encountered in actual outdoor exposure in an attempt to achieve an accelerated effect.

American standard code for information interchange. A means of encoding information.

Application-specific integrated circuit. A custom-designed integrated circuit.

A group of components physically joined to a PCB or ceramic board.

American Society for Testing and Materials.

The decrease in signal strength along a fiber optic waveguide caused by absorption and scattering. Attenuation is usually expressed in dB/km.

Equipment that automatically analyzes functional or static parameters to evaluate performance.

A blend of two or more polar and nonpolar solvents that act as a single solvent and can be used to remove both polar and nonpolar contaminants.

An intermediate stage in the reaction of certain thermosetting resins in which the material softens when heated and swells when in contact with certain liquids, but may not entirely fuse or dissolve. The resin in an uncured thermosetting system, is usually in this stage.