Electronics Forum | Mon Apr 06 12:57:49 EDT 2009 | jdumont
We are using Alpha's OM-338-PT with great results. The PT means pin testable which was selected because its residues are a little softer and clean slightly better.
Electronics Forum | Wed Apr 08 16:16:35 EDT 2009 | rkevin
I am looking to use a no clean and want to stick with SAC305 Steve, What would you recommend from Aim ?
Electronics Forum | Wed Apr 22 23:25:15 EDT 2009 | jandon
We were using AIM WS485 SAC305 and AIM NC257 SAC305 and we had problems with voiding and AIM�s narrow process windows. Now we are using Indium3.2 and Indium8.9 with much better results.
Electronics Forum | Sun Apr 05 12:30:22 EDT 2009 | qualityguy
Forum: Has anyone experience conformal coat peeling after HASS and the failure mechanism being low surface energy attributed to the solder mask?
Electronics Forum | Thu Apr 09 06:28:11 EDT 2009 | qualityguy
We have different Solder mask 'gloss' and 'satin' the gloss has a surface energy =40 dynes. The test evidence to date is strong correlation between surface energy, mask type, HASS failure
Electronics Forum | Thu Apr 09 21:21:11 EDT 2009 | qualityguy
Hello, another SME is saying the solder resist cure level is suspect. I have had a industry SME make reference to this too. Adjusting the cure of the resist changes the surface energy
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 | Wed Apr 08 08:21:48 EDT 2009 | 1036
push the "bubling" and it springs back. It does not look like solder mask. We may have to fight with board house as they don't think it's their problem. Do you know any way to find the real reason? Any idea or help will be appreciated.
Electronics Forum | Thu Apr 16 11:58:20 EDT 2009 | ccross
We have seen this exact same problem. Our vendor agreed it was their problem and also agreed it was a moisture issue within the PCB layers, not the solder mask. We have taken to baking our boards, especially when they are manufactured during the late
Electronics Forum | Fri Apr 17 10:21:20 EDT 2009 | padawanlinuxero
have you try to change the stencil apertures to another figure like the one that look like a baseball home? I was having that problem and some solder beads and with that I was able to decrease the tombstones
