2N2221AUB NPN Transistor

The 2N2221AUB is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N2221AUB transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N2221AUB transistor symbol shows an arrow from the base into the emitter. This means that the current flows from collector terminal to emitter terminal.

Circuit diagram symbol of the 2N2221AUB transistor as follows.

2N2221AUB Transistor Specification

Transistor Code		2N2221AUB
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.5W
Collector-Base Voltage (Maximum)	VCB	75V
Collector-Emitter Voltage (Maximum)	VCE	50V
Collector Current (Maximum)	IC	0.8A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	6V
Forward Current Transfer Ratio (hFE Value)		20
Transition Frequency	FT	250MHz
Collector Capacitance	CC	8pF

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