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PNP metal-can power transistor

MJ2955 Working Principle

Learn how MJ2955 works with an illustrated explanation and practical readings.

MJ2955 at a glance

Follow the labeled connections and functional stages

MJ2955 working principle: illustrated functional stages, basic circuit and connections
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How it works

3 stages · Explore one step at a time

Step 1 / 3

Drive the base

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

Step 2 / 3

Control current

Conventional current enters emitter and leaves collector.

Step 3 / 3

Respect heat and voltage

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

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