2N2957 PNP Transistor

The 2N2957 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N2957 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N2957 transistor symbol shows an arrow from the emitter into the base. This means that the current flows from emitter to collector terminal.

Circuit diagram symbol of the 2N2957 transistor as follows.

2N2957 Transistor Specification

Transistor Code		2N2957
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.3W
Collector-Base Voltage (Maximum)	VCB	40V
Collector-Emitter Voltage (Maximum)	VCE	18V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	100°C
Emitter-Base Voltage (Maximum)	VEB	3V
Forward Current Transfer Ratio (hFE Value)		100
Transition Frequency	FT	300MHz
Collector Capacitance	CC	4pF

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