Electronics Forum | Wed Jun 23 13:34:29 EDT 2004 | df_indy
I am four weeks into my new job, there always seems to be some issues here with PCB every week. Today while I was checking some assemblies with micro-scope, I found a lot of tiny bubbles/blisters on the board. They are just little dots if you look
Electronics Forum | Sat Aug 29 08:43:35 EDT 1998 | Dave F
| Hi, Friends, | Could you please recommend me some solder mask materials and equitements for high quality solder mask? Details such as company name, phone numer et al are welcomed. Thanks! | Have a good day | Xingsheng Xingsheng: Consider the follo
Electronics Forum | Mon Jul 14 12:55:07 EDT 2008 | arminski
I have a board with the above problem from our PCB supplier. After they applied the solder mask and run the PCB's to HASL process, the solder mask bubbled on one side of the PCB making the solder mask thickness higher and PCB looking awkward. They s
Electronics Forum | Tue Jul 15 17:54:57 EDT 2008 | arminski
thanks sir! you explained it very well.... thanks a lot!
Electronics Forum | Wed Jul 16 19:07:59 EDT 2008 | boardhouse
Your Welcome.
Electronics Forum | Wed Apr 08 07:49:25 EDT 2009 | davef
We don't view this as "board delamination." It looks more like "solder mask bubbling." It may be the picture. Please describe the issue or enclude additional pictures.
Electronics Forum | Tue Apr 04 10:18:58 EDT 2000 | Russ
Brian, I agree with Jesper, You seem to have a PCB supplier problem! The conditions that you are processing your assembly with are nothing unusual and in fact very standard throughout all of the manufacturing facilities that I have been in, unless
Electronics Forum | Mon Apr 03 23:17:51 EDT 2000 | Brian G
We have been experiencing intermittent problems with the solder masking bubbling up from the bottom side of the board, after wave soldering. Our board fabricator claims that none of his other customers are experiencing this problem, and that it is pr
Electronics Forum | Tue Apr 04 04:55:31 EDT 2000 | Jesper K
It's a typical answer from a board fabricator - 'None of our other customers have these problems'. But, and correct me if I'm wrong, none of the other customers uses the same PCB's as you do! Your preheat-parameters looks OK - they should not be giv
Electronics Forum | Tue Jul 15 16:12:23 EDT 2008 | boardhouse
Hi Armynski, I sell for an offshore board house, yes, it is common for offshore board shops to fill vias. The bubble is caused by air entrampment within the hole it self, when heat is applied during Hot air and the via is covered on both sides the e
