Terminology » Components » PNP vs NPN Transistors: Key Differences Explained

PNP vs NPN Transistors: Key Differences Explained

transistor

pnp

npn

semiconductor

electronics

This article clarifies the distinctions between PNP and NPN transistors.

PNP Transistor vs NPN Transistor

Key Differences Between PNP and NPN Transistors

The following table summarizes the core differences between PNP and NPN transistors:

Feature	PNP Transistor	NPN Transistor
Structure	Two P-type regions with a thin N-type region in between.	Two N-type regions with a thin P-type region in between.
Conduction	Current conduction occurs primarily due to the movement of holes from the emitter to the collector.	Current conduction occurs primarily due to the movement of free electrons from the emitter to the collector.
Full Form	Positive-Negative-Positive	Negative-Positive-Negative
Usage	Less commonly used.	More widely used compared to PNP transistors.
Resistance Values	Refer to Table-1 below.	Refer to Table-1 below.

Resistance values between terminals-PNP Transistor vs NPN Transistor

Table-1: Resistance values between transistor terminals

Note: Resistance values in Table-1 would be specific resistance measurements depending on the circuit which are not provided.

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