BU138 NPN Transistor

The BU138 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BU138 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BU138 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 BU138 transistor as follows.

BU138 Transistor Specification

Transistor Code		BU138
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO3
Collector Power Dissipation (Maximum)	PC	60W
Collector-Base Voltage (Maximum)	VCB	160V
Collector-Emitter Voltage (Maximum)	VCE	125V
Collector Current (Maximum)	IC	10A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	6V
Forward Current Transfer Ratio (hFE Value)		20
Transition Frequency	FT	3MHz

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