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What is Schottky Diode?

Semiconductor For You by Semiconductor For You
June 12, 2017
in Articles
0

A Schottky diode, also called as surface barrier diode, is a semiconductor diode which has a low forward voltage drop and a very fast switching ability.

Therefore, they are used in applications where a circuit needs to function off of a very low voltage and in all types of high-speed switching applications such as in generator, detectors, and RF applications.

Constructions:

Schottky Diode
Schottky Diode

The basic construction of Schottky diode is shown in above fig.

  • It is an electronic component consisting of a thin wire that lightly touches a crystal of semiconducting mineral to make a crude point–contact rectifier.
  • The Schottky diode is small different from of PN junction diode.
  • A metal semiconductor is formed between a metal and N type semiconductor.
  • It is unilateral device conducting currents in one direction and restricting in the other.
  • In Schottky diode the metals used are silver, platinum, gold and chrome or tungsten. The metal side acts as the anode and N type semiconductor acts as cathode.

The Schottky diode is used in switch mode power supply (SMPS), AC to DC converters (ADC), RADAR systems and used in mixers and detectors.

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