Electronics Forum | Wed Feb 16 09:33:09 EST 2000 | Kurt Waskow
Interested in information regarding PCB soldermask tenting over vias within a BGA layout. Is this a common practice to reduce the occurrence of shorts, are there any reliability concerns? Thanks!
Electronics Forum | Mon Feb 21 08:33:53 EST 2000 | Tony Di Mauro
Kurt, When I was working in a captive manufacturing house we had been to migrate toward tenting all vias under the BGA to eliminate not only shorts but insufficient (Starved) joints. Tony
Electronics Forum | Wed Sep 27 19:37:32 EDT 2000 | Dave F
Wolfgang is correct. Copper plating thickness of the via barrel walls is a key question you need to answer to troubleshoot this. Tenting is a red herring.
Electronics Forum | Wed Feb 16 09:33:09 EST 2000 | Kurt Waskow
Interested in information regarding PCB soldermask tenting over vias within a BGA layout. Is this a common practice to reduce the occurrence of shorts, are there any reliability concerns? Thanks!
Electronics Forum | Mon Feb 21 08:33:53 EST 2000 | Tony Di Mauro
Kurt, When I was working in a captive manufacturing house we had been to migrate toward tenting all vias under the BGA to eliminate not only shorts but insufficient (Starved) joints. Tony
Electronics Forum | Tue Jan 31 15:52:39 EST 2006 | russ
I have never related Solder mask layout to Black Pad. I don't see how they could be related but.......
Electronics Forum | Wed Feb 01 08:20:04 EST 2006 | Chunks
Can you post the site where you saw this? I've never heard of such a thing.
Electronics Forum | Wed Feb 01 16:04:10 EST 2006 | russ
Yes it does doesn't it! I wonder how this can cause black pad. Can you contact Saturn and ask them specifically? I browsed other PCB MFGrs. for this type of info and cannot find anyone else who claims this.
Electronics Forum | Thu Aug 20 04:37:03 EDT 2009 | sergey2007
Hi, I also paid attention on the solder balls.. I thought it was because of the pop-corning, but the customer told me the component was not damaged.. Regarding the bunch of tented vias, I need to ask the customer about that. Probably, they have unpo
Electronics Forum | Sun Nov 24 20:43:15 EST 2019 | sssamw
If you want to check if solder mask on tented via, better to do cross section to have a clear view. Sometime supplier will not tell you the truth once you ask question for potential quality issue.