BFT21 PNP Transistor

The BFT21 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the BFT21 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BFT21 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 BFT21 transistor as follows.

BFT21 Transistor Specification

Transistor Code		BFT21
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.36W
Collector-Base Voltage (Maximum)	VCB	60V
Collector-Emitter Voltage (Maximum)	VCE	30V
Collector Current (Maximum)	IC	1A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	60MHz
Collector Capacitance	CC	8pF

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