2SA157 PNP Transistor

The 2SA157 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2SA157 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SA157 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 2SA157 transistor as follows.

2SA157 Transistor Specification

Transistor Code		2SA157
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO1
Collector Power Dissipation (Maximum)	PC	0.02W
Collector-Base Voltage (Maximum)	VCB	15V
Collector Current (Maximum)	IC	0.004A
Operating Junction Temperature (Maximum)	TJ	65°C
Forward Current Transfer Ratio (hFE Value)		50
Transition Frequency	FT	30MHz
Collector Capacitance	CC	2pF

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