BD591 NPN Transistor

The BD591 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BD591 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BD591 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 BD591 transistor as follows.

BD591 Transistor Specification

Transistor Code		BD591
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO126
Collector Power Dissipation (Maximum)	PC	40W
Collector-Base Voltage (Maximum)	VCB	100V
Collector-Emitter Voltage (Maximum)	VCE	100V
Collector Current (Maximum)	IC	4A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	3MHz

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