MJ491 PNP Transistor

The MJ491 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the MJ491 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The MJ491 transistor symbol shows an arrow from the emitter into the base. This means that the current flows from emitter to collector terminal.

Circuit diagram symbol of the MJ491 transistor as follows.

MJ491 Transistor Specification

Transistor Code		MJ491
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO3
Collector Power Dissipation (Maximum)	PC	87W
Collector-Base Voltage (Maximum)	VCB	60V
Collector-Emitter Voltage (Maximum)	VCE	60V
Collector Current (Maximum)	IC	4A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		10
Transition Frequency	FT	4MHz
Collector Capacitance	CC	200pF

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