There are numerous differences between NPN and PNP transistors, and even though both are bipolar junction transistors, the direction of current flow is the name of the game.

An NPN transistor has three legs. In circuit diagrams or symbols, the legs of an NPN transistor can be identified as follows: Base (B) : Usually located in the middle.

Zetex Semiconductors has introduced a series of miniature NPN and PNP transistors for MOSFET gate driving in latest generation power supplies. ZXTN and ZXTP transistors The first bipolars to be ...