MJ420 NPN Transistor

The MJ420 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the MJ420 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The MJ420 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 MJ420 transistor as follows.

MJ420 Transistor Specification

Transistor Code		MJ420
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO5
Collector Power Dissipation (Maximum)	PC	0.8W
Collector-Base Voltage (Maximum)	VCB	275V
Collector-Emitter Voltage (Maximum)	VCE	250V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	175°C
Emitter-Base Voltage (Maximum)	VEB	6V
Forward Current Transfer Ratio (hFE Value)		25
Transition Frequency	FT	15MHz
Collector Capacitance	CC	12pF

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