Hi,

 By filling them completely ICT vacuum fixtures work better. However that is
probably not done today?

Bob K.

-----Original Message-----
From: TechNet <[log in to unmask]> On Behalf Of Rivera, Raye
Sent: Friday, December 14, 2018 7:42 PM
To: [log in to unmask]
Subject: [TN] Why do we fill vias, anyway?

Hello all,

I've recently had some PCBs rejected for incomplete via fill. This would be
in 8 mil vias, aspect ratios between 9.5 and 10.3, to be filled and plated
over.

I realized I have no idea why, or if, it is a good idea to fill vias.

Is anyone aware of PCB failures due to incomplete via fill?

And finally, is anyone else have trouble searching the Technet archives? I
used to get good information that way, but now all my searches return zero
results.

Best regards,
Raye Rivera
Quality Manager