2N845 NPN Transistor

The 2N845 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N845 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N845 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 2N845 transistor as follows.

2N845 Transistor Specification

Transistor Code		2N845
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.3W
Collector-Base Voltage (Maximum)	VCB	100V
Collector-Emitter Voltage (Maximum)	VCE	80V
Collector Current (Maximum)	IC	0.05A
Operating Junction Temperature (Maximum)	TJ	175°C
Emitter-Base Voltage (Maximum)	VEB	3V
Forward Current Transfer Ratio (hFE Value)		40
Transition Frequency	FT	25MHz
Collector Capacitance	CC	12pF

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