2N4078 PNP Transistor

The 2N4078 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N4078 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N4078 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 2N4078 transistor as follows.

2N4078 Transistor Specification

Transistor Code		2N4078
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO3
Collector Power Dissipation (Maximum)	PC	7.5W
Collector-Base Voltage (Maximum)	VCB	32V
Collector-Emitter Voltage (Maximum)	VCE	20V
Collector Current (Maximum)	IC	1A
Operating Junction Temperature (Maximum)	TJ	85°C
Emitter-Base Voltage (Maximum)	VEB	10V
Forward Current Transfer Ratio (hFE Value)		75
Transition Frequency	FT	1MHz

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