Pnp Bjt Diagram. A bipolar junction transistor bjt is a current controlled semiconductor device which has three terminals. The pnp transistor like almost all transistors is a 3 lead device.
The arrow for bjt transistors is always located on the emitter terminal and also it indicates the direction of conventional current flow. The pnp transistor behaves like two pn junctions diodes connected back to back. In pnp transistor this arrow indicates as pointing in and the current direction in pnp is completely opposite to the npn transistor.
A bipolar junction transistor bjt is a type of transistor that uses both electrons and electron holes as charge carriers in contrast a unipolar transistor such as a field effect transistor uses only one kind of charge carrier a bipolar transistor allows a small current injected at one of its terminals to control a much larger current flowing between two other terminals making the device.
The construction and terminal voltages for an npn transistor are shown above. The pnp transistor like almost all transistors is a 3 lead device. The pnp transistor has very similar characteristics to their npn bipolar cousins except that the polarities or biasing of the current and voltage directions are reversed for any one of the possible three configurations looked at in the first tutorial common base common emitter and common collector. A pnp transistor is a bipolar junction transistor constructed by sandwiching an n type semiconductor between two p type semiconductors a pnp transistor has three terminals a collector c emitter e and base b.
