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BC157 PNP Transistor

The BC157 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the BC157 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BC157 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 BC157 transistor as follows.

Circuit diagram symbol of the BC157 transistor

BC157 Transistor Specification

Transistor Code BC157
Transistor Type BJT
Transistor Polarity PNP
Transistor Material Silicon(SI)
Package TO18
Collector Power Dissipation (Maximum) PC 0.3W
Collector-Base Voltage (Maximum) VCB 50V
Collector-Emitter Voltage (Maximum) VCE 45V
Collector Current (Maximum) IC 0.1A
Operating Junction Temperature (Maximum) TJ 125°C
Emitter-Base Voltage (Maximum) VEB 5V
Forward Current Transfer Ratio (hFE Value) 70
Transition Frequency FT 130MHz
Collector Capacitance CC 6pF

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