BJT symbol

NPN and PNP both are Bipolar junction transistor (full form of BJT). It is three terminal electronics device n b called Base, e called Emitter and c called Collector. It is back to back connection of two P-N junction diode. The terminal are emitter are highly doped, base are lightly doped and collector are moderately doped region.

Schematic diagram symbol :

NPN                                          PNP

NPN and PNP both are Bipolar junction transistor (full form of BJT). It is three terminal electronics device n b called Base, e called Emitter and c called Collector. It is back to back connection of two P-N junction diode. The terminal are emitter are highly doped, base are lightly doped and collector are moderately doped region.

Schematic diagram symbol :

NPN                                          PNP

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