BFJ57 NPN Transistor

The BFJ57 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BFJ57 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BFJ57 transistor symbol shows an arrow from the base into the emitter. This means that the current flows from collector terminal to emitter terminal.

Circuit diagram symbol of the BFJ57 transistor as follows.

BFJ57 Transistor Specification

Transistor Code		BFJ57
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO39
Collector Power Dissipation (Maximum)	PC	0.8W
Collector-Base Voltage (Maximum)	VCB	125V
Collector-Emitter Voltage (Maximum)	VCE	125V
Collector Current (Maximum)	IC	0.25A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	40MHz
Collector Capacitance	CC	12pF

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