BFY21 NPN Transistor

The BFY21 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BFY21 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BFY21 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 BFY21 transistor as follows.

BFY21 Transistor Specification

Transistor Code		BFY21
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO77
Collector Power Dissipation (Maximum)	PC	0.7W
Collector-Base Voltage (Maximum)	VCB	40V
Collector-Emitter Voltage (Maximum)	VCE	15V
Collector Current (Maximum)	IC	0.2A
Operating Junction Temperature (Maximum)	TJ	175°C
Emitter-Base Voltage (Maximum)	VEB	3V
Forward Current Transfer Ratio (hFE Value)		64
Transition Frequency	FT	200MHz
Collector Capacitance	CC	7pF

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