2N3902 NPN Transistor

The 2N3902 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N3902 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N3902 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 2N3902 transistor as follows.

2N3902 Transistor Specification

Transistor Code		2N3902
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO3
Collector Power Dissipation (Maximum)	PC	100W
Collector-Base Voltage (Maximum)	VCB	700V
Collector-Emitter Voltage (Maximum)	VCE	325V
Collector Current (Maximum)	IC	3.5A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	2.8MHz
Collector Capacitance	CC	150pF

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