2N3149 NPN Transistor

The 2N3149 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N3149 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N3149 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 2N3149 transistor as follows.

2N3149 Transistor Specification

Transistor Code		2N3149
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO61
Collector Power Dissipation (Maximum)	PC	300W
Collector-Base Voltage (Maximum)	VCB	80V
Collector-Emitter Voltage (Maximum)	VCE	80V
Collector Current (Maximum)	IC	70A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	10V
Forward Current Transfer Ratio (hFE Value)		10
Transition Frequency	FT	0.1MHz

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