ASBSM4-LED3 datasheet(146/178 Pages) LUMBERG

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146

NPN (Sinking)

Acronym used to describe the polarization of a

bipolar junction transistor (BJTs). Also associated

with a sinking output.

NPN Output

Transistor output that switches the common or

negative voltage to the load (current sinking)

connected between output and positive supply.

Nylon

This is the generic name for synthetic fiber forming

polyamides.

OFHC (Oxygen Free High Conductivity Copper)

Ohm

The electrical unit of resistance. The value of

resistance by which a potential difference of one volt

will maintain a current of one ampere.

Ohm’s Law

E = I x R. Voltage (E) is directly proportional to the

product of current (I) and resistance (R) of circuit.

Opto-Coupled

Refers to a technique used to optically activate (turn

on) an electronic device usually a transistor or triac,

thus physically separating two sides of a circuit,

similar to a solenoid relay. The typical opto coupler

incorporates an LED (light emitting diode) as the

actuating device.

Output

The useful power or signal delivered by a circuit or

device.

PA (Polyamide, Nylon)

PAL (Phase Alternate Line)

A European color TV system featuring 625 lines per

frame, 25 frames and 50 fields per second.

Plastic

High polymeric substances, including both natural

and synthetic products, but excluding the rubbers,

that are capable of flowing under heat and pressure.

PLTC (Power Limited Tray Cable)

NEC classification for cable resistant to the spread

of fire and is suitable for use in cable trays at 300V

rating.

Plug

A connector associated with being attached to a

cable.

PNP (Sourcing)

Acronym used to describe the polarization of a

bipolar junction transistor (BJTs). Also associated

with a sourcing output.

PNP Output

A transistor output that switches the positive voltage

to the load (current sourcing) connected between

output and common.

Polarization

The feature of a connector that prevents miss-

mating by allowing plugging to occur only when the

connectors are properly oriented.

Polyurethane (PUR)

Is a thermoplastic material with good natural

chemical resistance.

Polyvinyl Chloride (PVC)

Is a thermoplastic material with good specific

properties when blended with additives.

POM (Polyoxymethylene, Acetal, Delrin)

Polyoxymethylene – a crystalline thermoplastic

polymer with a high melting point. It is suitable for

mechanical parts or electrical insulators that require

structural strength at above normal temperatures.

Potting

This is the sealing of a cable termination or other

component with a liquid that thermo sets into an

elastomer.

PUR (Polyurethane)

Broad class of polymers noted for good abrasion and

solvent resistance.

PVC (Polyvinyl Chloride)

A general purpose thermoplastic widely used for wire

and cable insulation and jackets.

PVDF (Polyvinylidene Fluoride)

Receptacle

The connector is usually mounted in a fixed location

and mates with a plug type connector.

Rectification

This is a term used to describe an electrical process,

which converts AC (alternating current) to DC (direct

current).

Reed Switch

This is a miniature mechanical switch, which

changes states when a magnetic field is applied.

Resistance (Rl)

The measurement of difficulty in moving electrical

current through a medium when voltage is applied. It

is measured in ohms.

Resistor

This is an electrical device, which opposes the flow

of current. Higher resistor Ohm values offer more

resistance to the flow of current.

Retractile Cord (Coiled Cord)

A cord having a specially treated jacket or insulation,

so that it will retract like a spring. Retraction may be

added to all or part of a cord’s length.

RF (Radio Frequency)

RG/U (RG) (Radio Guide)

A military designation for a coaxial cable, and ‘U’

stands for Universal.

RGB (Red, Green, Blue)

3 parts of color video signal; also refers to multi

coaxial cables carrying the above signals.

RJ45

Modular telecommunications connector.

RMS (Root Mean Square)

Rubber

A general term used to describe wire insulation

made of thermosetting elastomer, such as natural

or synthetic rubbers, neoprene, Hypalon, CPE butyl

rubber and others.

SAE (Society of Automotive Engineers)

SBR

A copolymer of styrene and butadiene. Most

commonly used type of synthetic rubber.

SDI (Serial Digital)

Digital information that is transmitted in serial form.

SDL (Shielded Data Link)

Separator

Pertaining to the wire and cable, a layer of textile,

paper, etc. which is placed between the outer jacket

and core construction to enhance jacket strip ability.

Serve

A filament or group of filaments such as fibers or

wires, wound around a central core.

Shield

A conductive envelope around the primary

conductors that provides an electronic barrier to

electromagnetic interference.

References

Glossary of Terms

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