I have to agree with Glynn, wow that looks really awful.  I cannot believe your supplier sent you anything that bad unless they thought it was something else cosmetic.  Maybe it is just solder mask bumps.  If it was hydrogen bubbles during the plating process a blind inspector should have kicked those babies.  Vendor should have said something anyway, I would not ship anything like that on workmanship.

If the copper is compromised reject those things.

Chuck Brummer
Acuson (soon to be Seimens)

"Stephen R. Gregory" wrote:

Hi Ya'll!!

It's picture time again! Got some boards in at incoming inspection that are
really weird looking Go to:

http://www.driveway.com/share?sid=e25a88c4.8e904&name=Pictures

Look at Pits.jpg and Pits2.jpg...very, very strange! Never have seen
something like
this before...and it's only on the backside of the board? What could cause
this?

Looking in the IPC-A-600F, it only talks about reductions in conductor width
of more than 20% (for class-2), but doesn't talk about reductions in
thickness by pits such as these...it's hard to tell if they've gone all the
way through the trace because the pits are filled with solder mask and you
can't see all the way down to the bottom of the pits.

Common sense tells me that these boards are rejectable...am I right?

-Steve Gregory-

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