MPSA42 Transistor TO-92
MPSA42 Transistor TO-92 are mainly used as amplifiers and switches for electrical signals, they are also used as electrical rectifiers in a circuit and can have various functions, is a semiconductor device used to amplify or switch electronic signals and electrical power.
It is composed of semiconductor material usually with at least three terminals for connection to an external circuit.
A voltage or current applied to one pair of the transistor’s terminals controls 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.
Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.
General Purpose Transistor is designed for General-purpose switching and Power applications such as audio output stages.
This transistor is designed for use in industrial and consumer applications. T
he device is housed in the TO-92 package, which is designed for medium power applications.
The Transistor is manufactured in a plastic TO-92 case.
When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, collector, and base leads.
Here is an image showing the pin diagram of the this transistor.
And they include the Base, Collector, and Emitter.
These three components are the transistor pinout, and the Emitter is the first pinout and is responsible for the output from the transistor.
Up next is the Base, which is the central component of the transistor.

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