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Subject:	Carrying current through a via
From:	"Salvaggi, Colleen" <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Wed, 26 Sep 2007 10:40:51 -0400
Content-Type:	text/plain
Parts/Attachments:	text/plain (32 lines)

How would one calculate how big a via hole has to be in order to carry
enough current through it to meet the load requirements?

 

I have a 4 layer, 2 oz, .062 thick, board that needs to carry 3 amps
through a via, (via barrel platting of .001). I can not find any
information that will help calculate how big the hole needs to be to
accommodate this.

 

Any assistance would be greatly appreciated.

 

Thanks,

 

Colleen


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