MJE521 NPN Transistor

The MJE521 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the MJE521 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The MJE521 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 MJE521 transistor as follows.

MJE521 Transistor Specification

Transistor Code		MJE521
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO126
Collector Power Dissipation (Maximum)	PC	40W
Collector-Base Voltage (Maximum)	VCB	40V
Collector-Emitter Voltage (Maximum)	VCE	40V
Collector Current (Maximum)	IC	4A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	4V
Forward Current Transfer Ratio (hFE Value)		40

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