Electronics Forum | Wed Jan 13 11:21:22 EST 1999 | Patrick O' Herlihy
Can anyone recommend ways of reducing damage to solder masks ... a new wick perhaps. I find that using standard wicks the imposed damage is un-acceptable. Also any good links on the subject of bga rework would be really appreciated in earnest ...
Electronics Forum | Mon Nov 08 12:47:52 EST 2004 | clampron
Good Day Everyone, I have a BGA rework that has some chipped/damaged solder mask that will need to be repaired prior to BGA replacement. I was wondering what materials are being used in the industry for this type of application. Any help would be g
Electronics Forum | Mon Jan 18 20:51:29 EST 1999 | Dave F
| Can anyone recommend ways of reducing damage to solder masks ... a new wick perhaps. I find that using standard wicks the imposed damage is un-acceptable. | | Also any good links on the subject of bga rework would be really appreciated | | in ear
Electronics Forum | Thu Dec 09 07:46:42 EST 2004 | davef
We did this for BGA pads, but have not thought about other types. So, this may or may not apply for those. Pad defined by:||Advantages||Disadvantages Non-solder mask||No point-of-stress concentration at edge mask and solder ball||Smaller pads have
Electronics Forum | Wed Feb 06 06:32:06 EST 2013 | bandjwet
We have been running both SRT and APR rework systems for many years in our business as a service provider of BGA rework (http://www.solder.net/services/bga-rework-services The SRT is a true workhorse with good bottom side heating capabilities. If yo
Electronics Forum | Tue May 04 14:15:46 EDT 2004 | michasm2
I'm looking for some input on a pay scale for experienced SRT/DRS operators. They do not do any profiling or process work - only remove/site prep/replace type work, along with any 'special' jobs like trace repair, masking repair, etc. They're current
Electronics Forum | Thu Dec 21 13:33:46 EST 2006 | ppcbs
The problem with super glue is that is has a cyanide base that turns into a toxic gas and evaporates when heated. See IPC-7095. Via's should be fully plugged with solder mask at the fab house. If your PCB designers are not up to speed on IPC requi
Electronics Forum | Thu Dec 07 12:22:50 EST 2006 | jimby
We have our circuit board vendor put a solder mask dot over the vias after HASL process. It's a little more expensive but eliminates the problem that you are talking about.
Electronics Forum | Thu Dec 07 20:28:07 EST 2006 | davef
When rushing to get a job done, it's easy to accidently remove solder mask from a nearby via when dressing BGA pads after removing the part. Just hit the via with some super glue [then say a small prayer] and push on. As an alternative, look here:
Electronics Forum | Thu Dec 07 14:19:07 EST 2006 | russ
You have two options 1. Get some real solder mask form board supplier (not touchup pens) and repaint the trace and heat cure. 2. Fill the via with solder before reflowing new part, this usually works but sometimes it doesn't. We use Method 1 Russ
