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In a message dated 6/7/06 5:33:40, [log in to unmask] writes:
> What about what could happen within a via on the bare board?
> I seen voids but usually not detectable by ET as it was to small in surface
> proportion.
> What about annular rings that were non-plated (the bubble effect /
> entrapped gas bubbles), partial or complete, do we have some ET information
> on those?
> On blind or buried vias?
>
Aahh, Roland,
You ae touching on one of my favorite subjects. I am giving whole-day
workshops on this. Ever come to the US? I typically give the workshop at IPC
meetings, but sometimes at independent venues. I gave it this past October in the UK,
but cannot get it anywhere in Germany. Seems the Fraunhofer Institute has
frozen me out of the German-speaking conferences---too much competition?!
Werner
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