BF123 NPN Transistor

The BF123 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF123 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF123 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 BF123 transistor as follows.

BF123 Transistor Specification

Transistor Code		BF123
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO7
Collector Power Dissipation (Maximum)	PC	0.33W
Collector-Base Voltage (Maximum)	VCB	40V
Collector-Emitter Voltage (Maximum)	VCE	25V
Collector Current (Maximum)	IC	0.025A
Operating Junction Temperature (Maximum)	TJ	125°C
Emitter-Base Voltage (Maximum)	VEB	4V
Forward Current Transfer Ratio (hFE Value)		35
Transition Frequency	FT	275MHz
Collector Capacitance	CC	0.4pF

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