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Diodes

zemaj

Mar 7, 2011
6
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Mar 7, 2011
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Hi,

I have a question, just say the input is 7-32V into a circuit. 4 diodes px6007 connected in parallel are there just in case for reverse polarity protection. The question is why, there are 4 there and how to do the calculation when diodes are in parallel.

px6007 specs are: I think, 6A, 1000V, Pmax = 5W, Tjmax = 150C.

Thanks
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
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Connected in parallel how?

Perhaps you can show us a circuit diagram.

Is it like one of these?

attachment.php


And what do you want to calculate?
 

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zemaj

Mar 7, 2011
6
Joined
Mar 7, 2011
Messages
6
Thanks for your reply,

(A) seem to be the right idea.

-Power dissipate for each diode
-equations or method to work them out.

Thanks
 
Last edited:

davenn

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Sep 5, 2009
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there's no valid reason for putting a set of diodes in parallel like that for reverse polarity protection

a single diode of the appropriate current rating would be sufficient

Dave
 
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