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Date: | Thu, 7 Jul 2011 19:32:09 +0300 |
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Can you send photos of the corrosion?
Do the corrosion exist at the Tin plated borders or on all the area?
Reuven
On Thu, Jul 7, 2011 at 7:07 PM, Pete <[log in to unmask]> wrote:
> We've got an assembly here showing all kinds of galvanioc corrosion after
> humidity tests. Looking at the galvanic chart, I notice that gold and tin
> are pretty far apart. Our tin plated shields are what's corroded.
>
> Am I thinking too much into this? Would ENiG on PCB really act as the
> cathode for tin plating, aluminum hardware, etc.? That would mean an awful
> lot of corrosion out there, there's lot's of board assemblies like this.
>
> Pete
>
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*Reuven Rokah*
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