Science

Difference between NPN transistor and PNP transistor

Main difference

A transistor is the semiconductor device that has three connections; it is capable of amplification as well as rectification. Unlike FET transistors, bipolar junction transistors (BJTs) are current-controlled devices that can rectify current. BJT can be further divided into two types of transistors that can be easily differentiated. NPN transistor is the type of bipolar transistor that consists of a p-type semiconductor that is fixed between two n-type semiconductors, while PNP is the type of bipolar transistor that consists of an n-type semiconductor connected between two n-type semiconductors. p type.The other most noticeable difference between two of them is that holes are the most important carriers in PNP transistors,

Comparative chart

NPN transistor PNP transistor
Structure NPN transistor is the type of bipolar transistor that consists of a p-type semiconductor that is clamped between two n-type semiconductors. PNP is the type of bipolar transistor that consists of n-type semiconductors connected between two p-type semiconductors.
Carrier Electrons are the most important carriers in the NPN transistor. Holes are the most important carriers in the PNP transistor.
Change process Fast Slowly
Base The p-type base is connected to the negative potential in NPN. In NPN, the n-type base is connected to the positive terminal.

What is the NPN transistor?

NPN transistor is the type of bipolar transistor that consists of a p-type semiconductor that is clamped between two n-type semiconductors. Since we know that electrons are the majority carrier in NPN transistors, the switching process takes place faster in it than in PNP transistors. As transistors there are three connecting semiconductor devices. In NPN, three of the terminals are connected to each of the doped semiconductors. The p-type semiconductor is the base in this case and is in the middle of the package, while on the left is the emitter and on the right is the collector. The p-type base is connected to the negative potential, while the collector is connected to the positive potential. In NPN transistors,

What is PNP transistor?

PNP is the type of bipolar transistor that consists of n-type semiconductors connected between two p-type semiconductors. PNP transistors use a small base current and negative base voltage to drive a much larger emitter-collector current. As holes are the most important carriers in PNP, it has a slightly slower switching time compared to NPN. This is because holes travel slower than electrons in NPN. PNP is the exact opposite of NPN, and this can be further developed, since in this n-type base it connects to the positive terminal. In many conditions, it actually becomes quite difficult to tell the difference between NPN and PNP transistors just by looking at them. So in that case,

NPN transistor vs. PNP transistor

  • NPN transistor is the type of bipolar transistor that consists of a p-type semiconductor that is fixed between two n-type semiconductors, while PNP is the type of bipolar transistor that consists of an n-type semiconductor connected between two n-type semiconductors. type p.
  • Holes are the most important carriers in PNP transistors, while electrons are the most important carriers in NPN transistors.
  • Electrons are the majority carrier in NPN transistors, so the switching process takes place faster in it than in PNP transistors.
  • The p-type base is connected to the negative potential in NPN, while in NPN the n-type base is connected to the positive terminal.

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