BF639 PNP Transistor

The BF639 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the BF639 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF639 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 BF639 transistor as follows.

BF639 Transistor Specification

Transistor Code		BF639
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO72
Collector Power Dissipation (Maximum)	PC	0.1W
Collector-Base Voltage (Maximum)	VCB	30V
Collector-Emitter Voltage (Maximum)	VCE	25V
Collector Current (Maximum)	IC	0.03A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	4V
Forward Current Transfer Ratio (hFE Value)		15
Transition Frequency	FT	700MHz
Collector Capacitance	CC	1pF

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