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BF291B NPN Transistor

The BF291B is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF291B transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF291B 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 BF291B transistor as follows.

Circuit diagram symbol of the BF291B transistor

BF291B Transistor Specification

Transistor Code BF291B
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO18
Collector Power Dissipation (Maximum) PC 0.36W
Collector-Base Voltage (Maximum) VCB 5V
Collector-Emitter Voltage (Maximum) VCE 40V
Collector Current (Maximum) IC 0.1A
Operating Junction Temperature (Maximum) TJ 200°C
Emitter-Base Voltage (Maximum) VEB 5V
Forward Current Transfer Ratio (hFE Value) 100
Transition Frequency FT 260MHz
Collector Capacitance CC 3.5pF

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