BC557B PNP Transistor

The BC557B is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the BC557B transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BC557B 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 BC557B transistor as follows.

BC557B Transistor Specification

Transistor Code		BC557B
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO92
Collector Power Dissipation (Maximum)	PC	0.5W
Collector-Base Voltage (Maximum)	VCB	50V
Collector-Emitter Voltage (Maximum)	VCE	45V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		200
Transition Frequency	FT	75MHz
Collector Capacitance	CC	9pF

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