BF138 NPN Transistor

The BF138 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF138 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF138 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 BF138 transistor as follows.

BF138 Transistor Specification

Transistor Code		BF138
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO106
Collector Power Dissipation (Maximum)	PC	0.2W
Collector-Base Voltage (Maximum)	VCB	30V
Collector-Emitter Voltage (Maximum)	VCE	30V
Collector Current (Maximum)	IC	0.02A
Operating Junction Temperature (Maximum)	TJ	125°C
Forward Current Transfer Ratio (hFE Value)		20
Transition Frequency	FT	300MHz
Collector Capacitance	CC	2.2pF

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