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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.

Circuit diagram symbol of the BF138 transistor

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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