Electronics Forum | Tue Jul 19 11:52:24 EDT 2016 | oleksz
Thank you Pavel. Aleksander
Electronics Forum | Fri Sep 06 14:07:20 EDT 2002 | ppwlee
Thanks for all replying to my printing SPC posting. I like to expand the SPC discussion on reflow and wave soldering. I am aware of the common methods of applying periodic measurements using test vehicles though the machines to collect critical pr
Electronics Forum | Mon Jul 18 12:24:53 EDT 2016 | oleksz
Some people involved in PCB assembly process claim that SMD components reflow soldering problems are often caused by traces running under a component. According to this claim, trace (or any copper) covered by solder mask and placed under SMD componen
Electronics Forum | Mon Jul 18 12:25:30 EDT 2016 | oleksz
Some people involved in PCB assembly process claim that SMD components reflow soldering problems are often caused by traces running under a component. According to this claim, trace (or any copper) covered by solder mask and placed under SMD componen
Electronics Forum | Wed Sep 11 07:23:07 EDT 2002 | johnw
peter, define what you class as SPC for these area's, or do you just mean looking at the PPM or DPM levels? John
Electronics Forum | Tue Jul 19 08:26:46 EDT 2016 | pavel_murtishev
Aleksander, The answer is no. Solder deposit being printed is 80um-150um in height depending on PCB design what is two times higher than any track covered by solder mask. Molten solder will merely center the component. QFNs are prone to soldering
Electronics Forum | Wed Sep 11 12:52:14 EDT 2002 | slthomas
We have found that using the SPC capability of the profiler's pc software helps us identify oven malfunctions sooner than we would normally find it. The ovens tend to compensate for dieing or dead blowers by cranking the heaters on for longer cycles
Electronics Forum | Mon Dec 16 16:35:55 EST 2002 | Jim Ferris
Randy, Steve & all, Can you guys point me in the right direction when it come to using selective wave soldering...I am trying to get in-depth information on the Pro's & Con's of having our supplier use this process for our PWA's. (I can see there ar
Electronics Forum | Thu Jul 20 16:15:24 EDT 2000 | Bob Willis
Sorry at the moment I do not have information but as usual I want to get some hands on sessions going. We were doing a flip chip workshop hands on session for Speedline last week in England. We did the theory and then hands on soldering and underfill
Electronics Forum | Tue Aug 22 14:59:55 EDT 2000 | Mike Naddra
What does the reflow profile look like , the question I had was surrounding the higher reflow temperature and the max temperature that lowest thermal mass components will see. Some other questions that I had were surrounding the components , what of
