2SA1857 PNP Transistor

The 2SA1857 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2SA1857 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SA1857 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 2SA1857 transistor as follows.

2SA1857 Transistor Specification

Transistor Code		2SA1857
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		SOT323
Transistor SMD Code		JS3_JS4_JS5
Collector Power Dissipation (Maximum)	PC	0.15W
Collector-Base Voltage (Maximum)	VCB	15V
Collector-Emitter Voltage (Maximum)	VCE	12V
Collector Current (Maximum)	IC	0.05A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	3V
Forward Current Transfer Ratio (hFE Value)		60
Transition Frequency	FT	750MHz
Collector Capacitance	CC	1.6pF

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