Connectors 101

Connectors 101

# 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
There are 42 names in this directory beginning with the letter I.
IMMERSION PLATING
The chemical deposition of a thin metallic coating over certain base metals by a partial displacement of the base metal.

IMPEDANCE
The total opposition that a circuit offers to the flow of alternating current or to any other varying current at a particular frequency. It is a combination of resistance (R) and reactance (X), measured in ohms(*). The equation for impedance as a function of s-parameters is: INSERT FORMULA where, Z = total impedance Z0 = characteristic impedance of the transmission line S11 = input impedance rho = ( See Reflection Coefficient )

IN-LINE
A receptacle connector designed not to be mounted, usually used in extension cord applications.

INCLUSION
A foreign particle in the conductive layer, plating, or base material.

INDENTER
The part of a crimping tool, usually the moving part, that compresses indentations into the contact conductor barrel.

INDUCTANCE
The property of a circuit or circuit element that opposes a change in current flow. Inductance causes current changes to lag behind voltage changes. Inductance is measured in henrys.

INDUCTIVE REACTANCE
The imaginary part of the impedance due to the inductance. The equation for inductive reactance is: INSERT FORMULA XL is the inductive reactance, measured in ohms ω is the angular frequency, measured in radians per second f is the frequency, measured in hertz L is the inductance, measured in henries

INFRARED
Radiation energy with a wavelength longer than that of visible light used for surface mount reflow heating/soldering.

INHIBITOR
A material that prevents or delays oxidation and galvanic action on a connector surface or the interface of different conductors.

INSERT ARRANGEMENT
The number, spacing, and arrangement of contacts in a connector.

INSERT CAVITY
A defined hole in the connector insert into which the contacts are inserted.

INSERT RETENTION
Axial load in either direction that an insert must withstand without being dislocated from its normal position in the connector shell.

INSERT, ELECTRICAL CONNECTOR
The insulating element of a connector that supports and positions the contacts.

INSERTION LOSS
The power loss in a transmission cable assembly or system caused by the installation of a component such as a connector, splice, or coupler; typically measured in decibels (dB). It includes losses incurred by the specimen and mismatch losses at the input and output of the specimen. When the impedance of the specimen matches that of the specimen environment impedance “insertion loss” = “attenuation”.

INSERTION TOOL
A device used to insert contacts into a connector.

INSPECTION HOLE
A hole located in the contact barrel that permits inspection to determine that the conductor is properly located before crimping and that the conductor is properly located after crimping, thus ensuring a proper termination.

INSULATED TERMINAL
A terminal having its conductor barrel and insulation support, if any, covered with a dielectric material.

INSULATION
Material having a high resistance to the flow of electric current, that is used to prevent leakage of current from a conductor.

INSULATION BARREL
The part of a terminal end that accommodates but does not secure the cable insulation.

INSULATION BARRIER
A raised or recessed configuration of the insulator to increase creepage distance between conducting surfaces.

INSULATION CRIMP
The physical reshaping of an insulation sleeve to close or compress around the wire insulation.

INSULATION DISPLACEMENT CONNECTION
A solderless electrical connection made by inserting a single wire into a precisely controlled slot in a termination such that the sides of the slot displace the insulation and deform the conductor of a solid wire or strands of stranded wire to produce a gas-tight connection.

INSULATION DISPLACEMENT CONNECTOR
A mass termination connector for flat cable with contacts that displace the conductor insulation to establish simultaneous contact with all conductors.

INSULATION DISPLACEMENT TERMINATION
A termination designed to accept a wire for the purpose of establishing an insulation displacement connection.

INSULATION GRIP
That portion of an insulation barrel that, when closed or compressed around the conductor insulation, makes contact with and provides support for the insulation on the cable.

INSULATION PIERCING
A crimping method in which lances pierce wire insulation, enter into the strands and make electrical contact without stripping the insulation.

INSULATION PIERCING TERMINAL
A terminal having a barrel with a design that displaces the wire insulation and makes contact with the enclosed conductor.

INSULATION RESISTANCE
The ratio of the applied voltage to the total current between two electrodes in contact with a specific insulation, usually expressed in megohms per 1000 feet.

INSULATION SUPPORT
That portion of a barrel, similar to an insulation grip, except it is not meant to be compressed around the conductor's insulation.

INTERCHANGEABLE
A component is interchangeable when it meets the original performance specifications and is intermountable. In the case of connectors, interchangeability applies only to connector mated sets, since individual connectors are not necessarily intermatable.

INTERCONNECTING CABLE
The wiring between modules, units or other parts of the system.

INTERCONNECTION
Mechanically joining devices together to complete an electrical circuit.

INTERFACE
The two surfaces on the contact side of mating connectors or plug-in component (e.g., relay) and receptacle, that face each other when mated.

INTERFACIAL CONNECTION
A conductor that connects conductive patterns on opposite sides of a PC board or other base. May be accomplished with a plated through-hole.

INTERFACIAL GAP
Any gap between the faces of mated inserts.

INTERFACIAL JUNCTION
The junction that is formed by the faces of two mating halves of a connector. This junction can be tightly compressed or loose, depending upon the requirements of the application of the connector.

INTERFACIAL SEAL
Sealing of a two-piece multiple contact connector over the whole area of the interface to provide sealing around each contact. This is usually done by providing a soft elastomeric insert material that comes under compression when both halves of the connector are in their fully mated position.

INTERLAYER CONNECTION
An electrical connection between conductive patterns in different layers of a multilayer printed circuit board.

INTERMATABLE CONNECTOR
A connector that is capable of being connected electrically and mechanically to another connector, but without regard to its performance and intermountability.

INTERMOUNTABLE
Two connectors are intermountable when their mechanical mounting parameters are identical without regard to intermatability or interchangability.

INTRACONNECTIONS
The joining of elements within devices.

ISOLATION STANDARD
A reference fixture without a test sample and with identical crosstalk characteristics as the test fixture. This fixture may or may not be part of the test board.