PN2222A: General Purpose Transistor
The PN2222A, also known as the PN2222, is a general-purpose transistor best suited to applications that don’t require high stress on the component. Depending on the datasheet, it is characterized as a transistor or an amplifier, but it can perform both of those functions. The PN2222A is equivalent to the 2N2222A, and the names are often used interchangeably among the electronics community. There are many transistors with different names that are almost functionally identical to the PN2222A.