2N3978 PNP Transistor

The 2N3978 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N3978 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N3978 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 2N3978 transistor as follows.

2N3978 Transistor Specification

Transistor Code		2N3978
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO46
Collector Power Dissipation (Maximum)	PC	0.4W
Collector-Base Voltage (Maximum)	VCB	25V
Collector-Emitter Voltage (Maximum)	VCE	20V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	200°C
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	1MHz
Collector Capacitance	CC	14pF

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