2SA557 PNP Transistor

The 2SA557 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2SA557 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SA557 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 2SA557 transistor as follows.

2SA557 Transistor Specification

Transistor Code		2SA557
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO106
Collector Power Dissipation (Maximum)	PC	0.3W
Collector-Base Voltage (Maximum)	VCB	20V
Collector Current (Maximum)	IC	0.25A
Operating Junction Temperature (Maximum)	TJ	125°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	100MHz
Collector Capacitance	CC	8pF

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