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Mon, 1 Nov 1999 08:54:57 -0500 |
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Hello Frank
had what looks like the exact same thing a few years back
happening predominantly or exclusively in small vias ?
our problem was airbubbles in the holes, preventing circulation and plating
fixed this with mechanical agitation.
good luck / Wolfgang
> -----Original Message-----
> From: Frank Freitas [SMTP:[log in to unmask]]
> Sent: Friday, October 29, 1999 11:04 AM
> To: [log in to unmask]
> Subject: [TN] Tapered Voids
>
> I'm looking for some information on the causes of tapered voids and how to
> eliminate them from the PWB manufacturing process.
>
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