BD191-4 NPN Transistor

The BD191-4 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BD191-4 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BD191-4 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 BD191-4 transistor as follows.

BD191-4 Transistor Specification

Transistor Code		BD191-4
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO3
Collector Power Dissipation (Maximum)	PC	37W
Collector-Base Voltage (Maximum)	VCB	100V
Collector-Emitter Voltage (Maximum)	VCE	60V
Collector Current (Maximum)	IC	10A
Operating Junction Temperature (Maximum)	TJ	175°C
Emitter-Base Voltage (Maximum)	VEB	7V
Forward Current Transfer Ratio (hFE Value)		20
Transition Frequency	FT	1.3MHz

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