DAMMP3C3PJ datasheet(280/301 Pages) ITT

280 / 301 page

Dimensions are shown in mm (inch)

Dimensions subject to change

Insulator — The insulating element into which the

contacts are mounted in a connector. This can be a

resilient material, thermoplastic, or a thermoset

compound, among other materials.

Insulator Rotation — A method of differentiating a

circular connector if more than one connector with

the same sex and layout is to be used in a system.

The insulator is permanently positioned in the shell

so that only a connector with the same degree of

rotation can be mated with it. Possible rotations are

specific to each layout with some layouts having

many possible rotations and others having none. A

chart of valid rotations is listed by layout for

connectors capable of being rotated. Most

connector series use the military convention of

assigning letter designations for specific degrees

of rotation (for example: W, X, Y, Z). See KEYING.

Interchangeable

—

The

characteristic

connectors in which a connector half of one

manufacturer or series will directly replace that of

another manufacturer and provide the same

electrical and mechanical function.

Intermateable — The characteristic of connectors

in which a connector half of one manufacturer or

series will mate directly with the connector half of

another manufacturer.

Intermittent — Occurring at intervals. A

connection which passes electrical current only in

random or undesirable intervals.

Intermountable

—

The

characteristic

connectors

which

one

manufacturer’s

connector or series will mount in exactly the same

panel space and mounting holes as another

manufacturer’s product.

ISO — Abbreviation for the International Standards

Organization. A group that operates at the

international level and sets most standards for

industry,

with

the

exception

electrical

engineering and telecommunications which are set

by the IEC and ITU respectively. CEN is the

equivalent organization at the European level.

Jacket — The outermost layer of insulation in a

cable composed of several wires.

Jackscrew — A screw attached to one half of a

connector pair used to mechanically align, draw

them together, and lock them in place.

Key — A mechanism used to polarize connectors

by the user. See KEYING.

Keying — A method of differentiating a connector

if more than one connector with the same sex and

layout is to be used in a system. The key is usually

a pin or other projection which can be located in a

contact cavity or slot. The key will prevent a

connector without a matching orifice from mating.

Keying and POLARIZATION serve the same

function, but keying can be done by the user, while

polarization is manufactured into the connector

and normally can not be altered by the user.

Layout — The number, size, and geometric

arrangement of the contacts in a connector. When

a connector is said to have a certain ‘‘layout’’ it

refers to a specific contact configuration. For

example, Combo D has 2 pages of drawings

showing the arrangement of the contacts in the

insulator.

Each

these

contact

cavity

arrangements can be referred to as a layout.

Locator — A part of a crimping tool TURRET.

Rotation of the locator sets the tool for a particular

size or sex contact. See TURRET.

Male Contact — See PIN CONTACT.

Mating Life — The minimum number of times a

connector can be mated and unmated and still

meet all of its design specifications. The maximum

life may be much higher than this figure.

Mil — One thousandth of an inch (.001). Used in

the United States as a unit of length in wire

diameters and linear dimensions.

Mil-Spec

—

Abbreviation

for

Military

Specification.

Milliampere — One one-thousandth (.001) of an

ampere. Abbreviated mA.

Millimeter — Metric unit of linear measure.

1 millimeter = .03937 inches. Abbreviated mm.

Milliohm — One one-thousandth (.001) of an

ohm. Abbreviated m .

mm2 — Millimeters squared. A standard for wire

diameters used in Europe instead of AWG. As

numbers get larger, wire diameters increase in

size. The relationship between mm2 and AWG is

reverse logarithmic. 1 mm2

=1973 circular mils. A

conversion graph is needed to make accurate

comparisons between AWG and mm2. Call for

assistance.

Mounting Clip — Any of a variety of mounting

accessories used to secure a connector or

connector pair to a rigid surface.

Multi-Conductor Cable — Two or more individual

wires surrounded by a jacketing material.

Nest — The portion of a crimping die that supports

the contact barrel during crimping.

Newton — A unit of acceleration. One Newton is

the force capable of accelerating 1 kilogram to one

meter per second per second. 1 pound force =

4.448221 Newtons. Abbreviated N.

Ohm — The unit of electrical resistance. One ohm

is the value of resistance through which a potential

difference of one volt will maintain a current of one

ampere. Its symbol is the Greek letter omega ( ).

Operating Temperature — The range of

AMBIENT TEMPERATURES over which the

connector can operate and still meet all of its

design specifications.

Operating Voltage — The range of voltages over

which the connector can be operated. Safety

precautions must be taken anytime a voltage in

excess of 50V is to be used in a circuit. Check your

local and national codes for guidelines.

Outgassing — The circumstance in which an

insulator releases gasses trapped within it under a

vacuum or conditions of decreased pressure, high

heat, or both.

Panel — The outside surface of a piece of

equipment on to which connectors are mounted.

The panel is usually made of metal.

Panel Mount — A connector designed to be

mounted on a panel by means of screws or jam

nut.

PCB — Abbreviation for Printed Circuit Boards.

Performance Class 1 — Performance class per

European specification DIN 41652, specifying

contact performance to 500 mating cycles,

followed by testing per DIN 41640, Part 21. The

contact is subjected to severe environmental

conditions, including industrial gasses, after the

500 mating cycles, and must meet basic contact

resistance, engaging force, and separation force

tests.

Performance Class 2 — Performance class per

European specification DIN 41652, specifying

contact performance to 200 mating cycles,

followed by testing per DIN 41640, Part 21. The

contact is subjected to severe environmental

conditions, including industrial gasses, after the

200 mating cycles, and must meet basic contact

resistance, engaging force, and separation force

tests.

D Subminiature

Glossary of Terms

279

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