In the case of an NPN transistor is done by making the base voltage more positive than the emitter voltage. The other main difference between them is that of biasing. In an NPN transistor, the electrons flow from emitter to collector whereas, in a PNP transistor, the electrons flow from collector to emitter. The basic difference between NPN and PNP transistors is the direction of the flow of electrons. Difference between NPN and PNP transistor This amplifies the signal passing through the transistor. When a small current flows through the base, it opens up a much larger channel between the collector and emitter, allowing electrons to flow freely between them. It consists of two semiconductor regions – the base and the collector – separated by a thin layer of insulating material. What is an NPN transistor?Īn NPN transistor is a three-terminal electronic device that can be used to amplify or switch electronic signals. However, when a small voltage is applied to the base, a large number of electrons can flow through it. When there is no voltage applied to the base, very few electrons can flow from the emitter to the collector. The middle layer, the base, controls the flow of electrons between the other layers, called the emitter and collector. The PNP transistor has two p-type semiconductor materials sandwiched around an n-type material. In a PNP transistor, the current flow is from the emitter to the collector when the base voltage is positive with respect to the emitter. PNP transistor is used as a switch or amplifier. The current gain of the PNP transistor is 0.96 and the emitter current is 7.2mA. In switches, PNP transistors can be used to turn a circuit on or off. In amplifiers, PNP transistors are used to increase the voltage or current of a signal. What is a PNP transistor?Ī PNP transistor is a three-terminal device that can be used as either an amplifier or a switch.

In this blog post, we will discuss the uses of PNP transistors, as well as how they differ from other types of transistors and how they can be used in various applications. PNP transistor is an important component in many electronic circuits and devices, providing a way for a small voltage or current signal to control a much larger one.īut what makes a PNP transistor so useful?

Download pnp transistor for free