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Reply To: | TechNet E-Mail Forum. |
Date: | Fri, 29 Jun 2001 10:33:10 -0500 |
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Just an observation, connecting copper to aluminium is very bad news for
corrosion. I hope this piece of kit is destined for a nice benign
environment....
> Phil,
> rather than plating the through holes, why not fill with a
> screen
> print/ thermal cure conductive? The effectiveness of this method may
> depend
> on hole diameter & panel thickness.....
> just a thought.
>
> David Albin
> Coates Circuit Products
>
> -----Original Message-----
> From: Phillip E. Hinton [mailto:[log in to unmask]]
> Sent: 29 June 2001 05:45
> To: [log in to unmask]
> Subject: [TN] Copper Plating Aluminum
>
>
> All
>
> Some designer has called out a plated-thru PC board that has copper
> layers
> and aluminum cores joined by plated thru copper holes. I am aware of
> two
> lousy methods that have been used. One is to use electroless nickle
> instead
> of electroless copper to give a metallic coating in the holes prep the
> holes.
> A zincate process precedes the electroess nickel. The second is to use
> a
> board that has been zincated and use pryo copper asa a plating solution.
>
> Does anybody have any other less difficult magical solution(s)
>
> Thanks
> Phil Hinton
Eric Christison
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