2N42 PNP Transistor

The 2N42 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N42 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N42 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 2N42 transistor as follows.

2N42 Transistor Specification

Transistor Code		2N42
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO22
Collector Power Dissipation (Maximum)	PC	0.05W
Collector-Base Voltage (Maximum)	VCB	30V
Collector Current (Maximum)	IC	0.008A
Operating Junction Temperature (Maximum)	TJ	75°C
Forward Current Transfer Ratio (hFE Value)		9
Collector Capacitance	CC	20pF

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