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Is a transistor a diode

Updated: 8/20/2019
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12y ago

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No.

Di, or bi, means two. A diode, from the Greek di (two), and ode (path), has, rather obviously, two connections, which, in older ones (valves/thermionic diodes), were called electrodes.

A transistor has three connections (so it would make, at least grammatic, sense to call it a triode).

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12y ago
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Wiki User

10y ago
  • A bipolar junction transistor can be used as a diode by shorting the base and collector.
  • A junction field effect transistor operates as a reverse biased diode, but some types will be damaged or destroyed if forward biased.
  • A metal oxide semiconductor field effect transistor is not a diode.
  • A unijunction transistor is a diode with 2 connections some distance apart on its cathode (called base 1 and base 2).
  • A programmable unijunction transistor is really a variation on the silicon controlled rectifier.
  • etc.
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