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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.

Circuit diagram symbol of the 2N2221AUB transistor

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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