2N2902 NPN Transistor

The 2N2902 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N2902 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N2902 transistor symbol shows an arrow from the base into the emitter. This means that the current flows from collector terminal to emitter terminal.

Circuit diagram symbol of the 2N2902 transistor as follows.

2N2902 Transistor Specification

Transistor Code		2N2902
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO5
Collector Power Dissipation (Maximum)	PC	40W
Collector-Base Voltage (Maximum)	VCB	120V
Collector-Emitter Voltage (Maximum)	VCE	120V
Collector Current (Maximum)	IC	0.75A
Operating Junction Temperature (Maximum)	TJ	175°C
Emitter-Base Voltage (Maximum)	VEB	10V
Forward Current Transfer Ratio (hFE Value)		30

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