PNP Transistor

A transistor in which an N-type semiconductor is sandwiched between tow P-type semiconductors, is known as PNP transistor. (Shown in Figure)

In the p-region, majority carriers are holes or protons, and in the n-region, majority carriers are electrons.

Symbol of PNP Transistor

As conventional current flows in the transistors, so charge carriers start moving from emitter and they are collected at collector.