BUT21BF NPN Transistor

The BUT21BF is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BUT21BF transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BUT21BF 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 BUT21BF transistor as follows.

BUT21BF Transistor Specification

Transistor Code		BUT21BF
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		ISO220
Collector Power Dissipation (Maximum)	PC	20W
Collector-Base Voltage (Maximum)	VCB	750V
Collector-Emitter Voltage (Maximum)	VCE	400V
Collector Current (Maximum)	IC	5A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	1.5V
Forward Current Transfer Ratio (hFE Value)		25

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