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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.

Circuit diagram symbol of the BF639 transistor

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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