2N1221 PNP Transistor

The 2N1221 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N1221 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N1221 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 2N1221 transistor as follows.

2N1221 Transistor Specification

Transistor Code		2N1221
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO5
Collector Power Dissipation (Maximum)	PC	0.25W
Collector-Base Voltage (Maximum)	VCB	30V
Collector-Emitter Voltage (Maximum)	VCE	25V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	175°C
Emitter-Base Voltage (Maximum)	VEB	20V
Forward Current Transfer Ratio (hFE Value)		18
Transition Frequency	FT	4MHz
Collector Capacitance	CC	15pF

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