Disclaimer: This is a user generated content submitted by a member of the WriteUpCafe Community. The views and writings here reflect that of the author and not of WriteUpCafe. If you have any complaints regarding this post kindly report it to us.
The PNP transistor is formed three layer of semiconductor, one is N-type and other two are P-type. The structure thus formed will be a PNP transistor. It will have three terminal, the first P-type semiconductor is called emitter and the other P-type material is termed as the collector.
NPN and PNP refer to the arrangement of the pieces that make up the transister. … An NPN transistor has a piece of P-type silicon (the base) sandwiched between two pieces of N-type (the collector and emitter). In a PNP transistor, the type of the layers are reversed. Below is a typical cross section of a transistor.
