2N3139 NPN Transistor

The 2N3139 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N3139 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N3139 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 2N3139 transistor as follows.

2N3139 Transistor Specification

Transistor Code		2N3139
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO61
Collector Power Dissipation (Maximum)	PC	25W
Collector-Base Voltage (Maximum)	VCB	140V
Collector-Emitter Voltage (Maximum)	VCE	140V
Collector Current (Maximum)	IC	2A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	1V
Forward Current Transfer Ratio (hFE Value)		10
Transition Frequency	FT	10MHz
Collector Capacitance	CC	30pF

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