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PNP metal-can power transistor

MJ2955 Internal Circuitry

Explore the internal circuitry and functional stages of MJ2955.

Inside MJ2955

Compact functional cutaway inside the metal package.

MJ2955 emitter base collector regions inside a metal can.
Original functional illustration, not a microscopic die layout.

Explore the circuit

Select a stage to see its role and connections

Drive the base

Pull base below emitter through the resistor. The driver must return to +12 V to turn off.

Control current

Conventional current enters emitter and leaves collector.

Respect heat and voltage

Check safe operating area, drive current and cooling together; a current rating is not a guaranteed operating point.

Component view