List of DIY Electronics Engineering Projects

FAST RECOVERY DIODES








FAST RECOVERY DIODES


Fast recovery diodes are designed to provide ultra high switching speed. They are mainly classified into two :-
  • Diffused PN Junction Diodes

  • Metal Semiconductor Diodes
The total recovery time for a P-N Junction diode can be substantially reduced by introducing efficient recombination centers, such as Au and Si, to the bulk material. Although the recovery time is directly proportional to the lifetime, it is not possible to reduce recovery time to Zero by introducing an extremely large number of recombination centers, because the reverse generation current of a P-N junction is proportional to recombination centers. For direct band gap Semiconductors, such as GaAs, the minority carrier lifetimes are much smaller than that of silicon. This results in ultrahigh speed GaAs P-N junction diodes with recovery times of the order of 0.1ns or less.


Tittu Thomas

Author & Editor

I'm Tittu Thomas, An Electronics and Communication Engineer from India, Kerala. I love doing hobby electronics circuits, blogging, programming, etc. Started this blog while doing my B-Tech degree under CUSAT university.



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