Diode information

Thread Starter

bundick

Joined Dec 19, 2007
97
Looking at power diodes I see 4001-4007's.
What do the different 400X numbers mean?

I intend to make a Rectifier for a B&S lawn mower engine to replace a shorted Rectifier.
Looking at sellers who only put up the 400X number.

I think I need PIV of 50 or more and at least 10 watts.
 

bertus

Joined Apr 5, 2008
22,270
Hello,

The 1N400X series is for 1A in the range from 50 - 1000 Volts.
The 1N540X series is for 3A in the same range.

See th datasheets.

Greetings,
Bertus
 

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SgtWookie

Joined Jul 17, 2007
22,230
It would help to know just a bit more about your application.

Are you attempting to repair an alternator on the lawnmower engine? eg: riding lawnmower?

The 1N540x series is much more robust, as Bertus indicated. Your local Radio Shack stocks both 1N400x and 1N540x series rectifier diodes. You are better off to use a rectifier diode with a higher current rating than you need, than to use too low of a current rating.
 

Thread Starter

bundick

Joined Dec 19, 2007
97
Thanks Sarge n' Bertus.
I am trying to repair a B&S 14.5 Hp engine. It's not charging and runs the battery down in a few minutes.
Almost certain it's the Rectifier.
I thought I would make one of my own.
I'll see what RS wants for their 1N540X series Diodes. Local buying is best.
 
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