PN 2222 A (Pack of 5)
The PN2222A is considered a very common transistor, and is used as an exemplar of an NPN transistor. It is frequently used as a small-signal transistor, and it remains a small general purpose transistor of enduring popularity.
What is Transistor?
A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. It is composed of semiconductor material with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals changes the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal.
Collector to emmiter voltage(Vce)=40 V
Collector current(Ic)=500 mA
Powre dissipation(Pd)=500 mW/1.8 W