2N3121 PNP Transistor

The 2N3121 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N3121 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N3121 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 2N3121 transistor as follows.

2N3121 Transistor Specification

Transistor Code		2N3121
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.36W
Collector-Base Voltage (Maximum)	VCB	45V
Collector-Emitter Voltage (Maximum)	VCE	45V
Collector Current (Maximum)	IC	0.5A
Emitter-Base Voltage (Maximum)	VEB	4V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	130MHz
Collector Capacitance	CC	10pF

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