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BF420 NPN Transistor

The BF420 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF420 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF420 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 BF420 transistor as follows.

Circuit diagram symbol of the BF420 transistor

BF420 Transistor Specification

Transistor Code BF420
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO92
Collector Power Dissipation (Maximum) PC 0.83W
Collector-Base Voltage (Maximum) VCB 300V
Collector-Emitter Voltage (Maximum) VCE 300V
Collector Current (Maximum) IC 0.025A
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 1.6pF

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