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BC138 NPN Transistor

The BC138 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BC138 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BC138 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 BC138 transistor as follows.

Circuit diagram symbol of the BC138 transistor

BC138 Transistor Specification

Transistor Code BC138
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO5
Collector Power Dissipation (Maximum) PC 0.3W
Collector-Base Voltage (Maximum) VCB 60V
Collector-Emitter Voltage (Maximum) VCE 40V
Collector Current (Maximum) IC 1A
Operating Junction Temperature (Maximum) TJ 200°C
Emitter-Base Voltage (Maximum) VEB 5V
Forward Current Transfer Ratio (hFE Value) 35
Transition Frequency FT 40MHz
Collector Capacitance CC 25pF

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