PNP Transistor Description | Manufacturers and Suppliers

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What is a PNP Transistor:

A bipolar junction transistor has two types one is NPN and the other is PNP so on this page, we are going to provide the Description regarding PNP Transistors. First of all you need to get to know that in ‘PNP’ which thing was denoted by ‘P’ and which one is by ‘N’.

So, in the name PNP ‘P’ indicates the polarity of the voltage which is required for the emitter and the polarity of the base is denoted by the symbol of ‘N’. The PNP Transistors carries the holes majority charge.

Working of PNP Transistors:

The working of PNP and NPN transistors is very similar, but to construct the emitter, base and collector terminals it uses different Materials as compared to NPN.
The PNP transistors have the reversed biased, base-collector terminals so that we need to use the negative voltage for the collector, so with the emitter terminal base terminal should be negative. Also the collector should be negative after the base.

Difference Between PNP and NPN Transistors:
  • By increasing the current which flows to the base terminal, we can turn On the NPN transistor, but oppositely in PNP when in the base terminal, currently exists the system turned off.
  • Here in the case of NPN Transistors the flows of current is traveled from the collector (C) to the Emitter (E) but in the PNP transistors this process is opposite it’s from the emitter to the collector.
  • In NPN the collector gets the positive voltage to start working on the other hand positive voltage is provided to the emitter for the same process.
  • In NPN the system can be shut off with the low Current. , but in PNP when the current is off the system turned on automatically.
  • In PNP the layer of N is sandwiched between the P materials, but in the case of NPN P is sandwiched between the N materials.
  • The materials and the current flow of both the transistors are different from each other.


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