Bipolar Transistors

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Bipolar Transistors

Bipolar transistors use both electrons and electron holes as charge carriers, allowing a small current injected at one of its terminals to control a much larger current flowing between two other terminals, making the device capable of amplification or switching.

Bipolars have a Base, Collector, Emitter:
Bipolar Transistor Symbols - NPN - PNP

Do you see the arrow on the emitter? An easy way to remember which round:

  • NPN – Not Pointing iN
  • PNP – Pointing iN

These are the very simplest form of the transistor, but are a great place to start, and are easy to get using. If you need help, check out our blog or contact our technical team via email for support.


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