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Date: | Wed, 26 Nov 2008 16:56:43 -0800 |
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Henry,
Never seen it. I'd like to see if you can post some pics on the cross-section.
Andy
Quoting henry rekers <[log in to unmask]>:
> Any technetters out there experiencing this mysterious nickel
> erosion process with enig boards on their leadfree waves?
> Apparently there is a committee set up already. I would like to
> share experiences if anyone is willing to come forward.
>
> Essentially, the defect shows up as a dewet on the annular ring of
> the TH devices. On cross section, there is large amounts of nickel
> eroded away and the surface is non-wettable. No corrosion is
> evident, so it's NOT black pad.
>
> Anybody?
>
>
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