Friday, 10 May 2013

Special Purpose diodes....!

Schottky diode:
It is also known as Hot Carrier Diode.
It is a semiconductor diode with a low forward voltage drop and a very fast switching action.

A schottky diode is formed by joining a doped semiconductor regio(usually N-type) with a metal such as Gold,Platinum, or Silver. So rather than P-N junction there is a metal semiconductor juction.

It operates with forward bias and only with majority carriers. This means that if the semiconductor body is doped n-type, only the n-type carriers play a significant role in normal operation of the device and same for p-type.

It finds broad application in high speed computer circuits where the fast switching time equates to high speed capability, and the low forward voltage drop equates to less power dissipation when conducting.


Post a Comment