Electronics Forum | Thu Jan 08 15:03:40 EST 2004 | dwzeek
We have an ongoing problem with our QFP144 packages soldering. It has not received much attention until late due to some customer failures. Most of the failures would show up in ESS testing and be repaired. The failure rate is about 2 in 1000 parts f
Electronics Forum | Tue Jan 13 01:20:31 EST 2004 | mantis
Hi All, I have seen this issue on a QFP160.Firts of all as previously suggested if the board is wave solderded make sure that you are not seeing topside reflow as the board goes over the wave.Secondly you should verify your reflow profile.I seen this
Electronics Forum | Mon May 24 03:11:05 EDT 2004 | snmsmt
Hi everyone, I'm new to this Forum and still a young'n the electronics manufacturing industry so be gently on me :p I'm currently trialing different solder pastes with our small 5 stage oven and I am having wetting issues with a particular paste. C
Electronics Forum | Sat Apr 17 10:44:21 EDT 2010 | kcorrin
Sounds like you and your board suppliers have done alot of work with this issue trying to solve the problem. When I got into this situation previously, I relied on an outside lab to help me. We didn't have SEM or any testing capability at my shop eit
Electronics Forum | Fri Apr 21 22:47:39 EDT 2006 | fastek
SMEMA didn't exist when this printer was in production.....at least not in the early years of production.
Electronics Forum | Wed May 17 12:22:09 EDT 2006 | russ
What color is the pad? coated with solder?, black?, still gold? Russ
Electronics Forum | Wed May 17 12:31:54 EDT 2006 | Mark
Hi , It looks like there is solder (shiny like mirror surface). Defently not black and not gold. Regards Mark
Electronics Forum | Thu May 18 10:28:46 EDT 2006 | slthomas
Are you seeing added solder or is it possible you're looking at nickel?
Electronics Forum | Thu Jul 05 14:00:37 EDT 2007 | 18424
Are you using a leaded or lead-free process?
Electronics Forum | Thu Jul 05 14:10:46 EDT 2007 | arun2382
Lead-free process.