Dictionary J

JFET

See "junction-gate field-effect transistor".

References:

jitter

The time deviation of a phase-locked-loop-generated (PLL-generated) controlled edge from its nominal position.

References:

JESD65B, 9/03

junction, collector(-base)

The transition region between the collector region and the base region.

References:

JESD77-B, 2/00

junction diode

A semiconductor diode consisting of two physical regions of opposite conductivity type separated by a p‑n transition region.

References:

JESD77-B, 2/00

junction, emitter(-base)

(1) (of a junction transistor) (A) A semiconductor junction normally biased in the low-resistance direction to inject minority carriers into the base. (Ref. 60 IRE 28.S1.)

(B) The transition region between the emitter region and the base region.

(2) (of a unijunction transistor): The transition region between the emitter region and a base region.

References:

JESD10, 9/81

JESD77-B, 2/00

junction-gate charge-coupled device

A buried-channel charge-coupled device that uses a diffused junction to isolate the transfer gate.

References:

JESD99B, 5/07

junction-gate field-effect transistor (JFET)

A field-effect transistor whose gate regions form p‑n junctions with the channel.

References:

JESD24, 7/85
JESD77-B, 2/00

junction (in a semiconductor device) (general term)

A transition region between semiconductor regions of different electrical properties, or a physical region between a semiconductor region and a region of a different type; it is characterized by a potential barrier that impedes the movement of charge carriers from the region of higher concentration to the region with lower concentration.

References:

JESD10, 9/81
JESD24#, 7/85
JESD77-B, 2/00
JESD282-B, 4/00

junction temperature (T_J)

The temperature of a semiconductor junction.

NOTE In data sheets it is common practice to use this term to mean virtual-junction temperature.

References:

JESD10, 9/81
JESD77-B, 2/00
JESD99B, 5/07

junction-to-ambient [case] [lead] [mounting-surface](transient) thermal impedance

See "thermal impedance, junction-to-ambient [case] [lead] [mounting-surface]".

References:

junction-to-ambient [mounting-surface] thermal resistance

See "thermal resistance, junction-to-ambient [mounting-surface]".

References:

junction-to-case [lead] thermal resistance

See "thermal resistance, junction-to-case [lead]".

References:

junction transistor, (bipolar)

A bipolar transistor consisting of three succeeding physical regions of alternating conductivity type (npn or pnp) that include the supply region, control region, and collection region and that are separated from each other by two transition regions.

References:

JESD77-B, 2/00

Dictionary J

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