2SA21 PNP Transistor

The 2SA21 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2SA21 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SA21 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 2SA21 transistor as follows.

2SA21 Transistor Specification

Transistor Code		2SA21
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO1
Collector Power Dissipation (Maximum)	PC	0.015W
Collector-Base Voltage (Maximum)	VCB	12V
Collector Current (Maximum)	IC	0.002A
Operating Junction Temperature (Maximum)	TJ	75°C
Emitter-Base Voltage (Maximum)	VEB	1V
Forward Current Transfer Ratio (hFE Value)		50
Transition Frequency	FT	25MHz
Collector Capacitance	CC	3pF

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