BF891 PNP Transistor

The BF891 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the BF891 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF891 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 BF891 transistor as follows.

BF891 Transistor Specification

Transistor Code		BF891
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO202
Collector Power Dissipation (Maximum)	PC	7W
Collector-Base Voltage (Maximum)	VCB	400V
Collector-Emitter Voltage (Maximum)	VCE	350V
Collector Current (Maximum)	IC	0.03A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		50
Transition Frequency	FT	60MHz
Collector Capacitance	CC	1.8pF

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