Reverse polarity protection circuit for 12V DC

[ashwini jayaraman]

Hello.can anyone tell me which diode is the best choice for reverse polarity protection(12v DC)?Can you mention its voltage&current spec?

 

[IanP]

Hello.can anyone tell me which diode is the best choice for reverse polarity protection(12v DC)?Can you mention its voltage&current spec?

You have to describe the "current" situation of the circuit you want to protect.
For I<1A you can use somethnig like 1N4001/4 or 1N5819 (Schottky) ..
For I>1A and <3A -- 1N5404 or 1N5822 ..
etc ...

https://www.edn.com/design/analog/4...larity-protection-circuit-has-no-voltage-drop

:wink:
IanP

 

[ashwini jayaraman]

Thank you so much!!!

Your suggestion is very useful!!!