SS72012 datasheet(127/144 Pages) ACIT

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Aerospace | Military | Transportation | Industrial | Specialty

Glossary

Double Shield: Two layers of wire braid, one over the other, in direct

contact.

Drain Wire: An uninsulated wire laid over the component or

components of a cable and used as a ground connection.

Drawing: Pulling metal wire through a die or series of dies for

reduction of diameter to a speciﬁed size.

Dual Coaxial Cable: Two coaxial cables within a common outer jacket.

Duplex Cable: A cable composed of two insulated single conductor

cables twisted together.(Note:The assembled conductors may or may

not have a common covering of binding or protecting materials.(See

also Parallel Pair.)

Durometer: A measuring device used to measure the hardness of a

substance.Also, the measurement of hardness on the Shore scale.

Eccentricity: A measure of the center of a conductor’s or cable

component location with respect to the circular cross section of the

insulation.Expressed as a percentage of center displacement of one

circle within the other.

EIA: Abbreviation for Electronic Industries Association.

Elastomer: A material which at room temperature stretches under low

stress to at least twice its length and snaps back to its original length

upon release of stress.

Electric Strength: See Dielectric Strength.

Electromotive Force (EMF): Pressure or voltage.The force which

causes current to ﬂow in a circuit

Electronic Interconnecting Wire: Wires or cables used to make

external connections between various units of electronic equipment.

Electromagnetic Coupling: The transfer of energy by varying a

magnetic ﬁeld.Inductive coupling

Electrostatic Coupling: The transfer of energy by varying an

electrostatic ﬁeld.Capacitive coupling

Electro-Tinned: Electrolytic process of tinning wire.

Elongation: The fractional increase in length of a material that is

stressed in tension.

Embossing: Marking by raised lettering on the sheath material of a

cable.

EMF: Abbreviation for electromotive force or voltage.

Ends: The number of wires or threads on a braider carrier.

End-To-End Check: Test conducted on a completed wire and/or cable run.

Epoxy Resins: Straight-chain resins based on ethylene oxide, its

derivatives or homologs.Used for bonding and potting.

ETFE: Ethylene Tetraﬂuoroethlyene.See Tefzel.

ETP: Abbreviation for Electrolytic Tough Pitch copper.See copper.

External Interference: The effects of any electrical waves or ﬁelds

which cause sounds other than the desired signal.Static.

Extrusion: Continuously forcing plastic, rubber, or elastomer material

through an oriﬁce to apply it as insulation or jacketing to conductor or

cable.

Farad: Unit of Capacitance.The capacitance of a capacitor which, when

charged with one coulomb, gives a difference of potential of one volt.

Fatigue Resistance: Resistance to metal crystallization which leads

to conductors or wires breaking from ﬂexing.

Feedthrough: Terminal or connector that carries current or signal

through a wall or panel.

FEP: Abbreviation for Fluorinated Ethylene Propylene.See Teﬂon FEP.

FEPB: NEC designation for FEP insulated wire with glass or asbestos

braid.

Ferrous: Composed of or containing iron.A ferrous metal exhibits

magnetic properties.

Fiber: A thread or threadlike structure such as glass yarn.

Fiberglas: See Glass.

Filament: A very ﬁne ﬁber.

Filler: Materials used in multi-conductor cables to occupy the interstices

formed by the assembled conductors.Also,a substance,often inert,

added to a plastic to improve properties and/or decrease cost.

Film: Sheet material less than .010" thick.

Flame Resistance: Ability of the material to extinguish ﬂame once

the source of heat is removed.

Flammability: Measure of the material’s ability to support

combustion.

Flashover: A disruptive discharge around or over the surface of an

insulator.

Flat Braid: Woven braid of ﬂattened wires or strips of sheet metal or

metal foil.Sometimes used as a high current conductor at low voltages.

Flat Cable: A multiconductor cable with the conductors parallel to

each other and on the same plane.

Flat-Conductor Cable: A cable with ﬂat conductors.

Flex Life: Ability of a conductor, wire, or cable to withstand repeated

bending.

Floating Circuit: A circuit which has no connection to ground.

Fluorinated Ethylene Polypropylene (FEP): See Teﬂon FEP.

Flux: The rate of ﬂow of energy across or through a surface.Also, a

substance used to prevent oxidation on surfaces to be joined during

soldering.

FM: Frequency Modulation.

Foamed Plastics: Resins in ﬂexible or rigid sponge form, with the

cells closed or open (interconnected).Foamed insulations provide low

dielectric constants and weight savings.

Foaming Agents: Chemicals added to plastics and rubbers that cause

them to assume a cellular structure.

Frequency: The number of times an alternating current repeats its

cycle in one second.

Fused Spiral Tape: Wire insulation or cable jacket of spiral-wrapped

PTFE tape which is passed through a sintering oven to fuse the

overlapped areas of the tape.

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