Electronics Forum | Thu Sep 07 10:03:30 EDT 2000 | KS Wong
Hello, I am looking for input on the 7 zone convectional reflow oven on the temperature profiling. I having a problem with the flux/solder spattering on the Au cotact fingers. I have ran some experiment with the soak time and reflow time. Anyway,
Electronics Forum | Fri Sep 08 00:24:35 EDT 2000 | Jim Arnold
Sudden flux boil will cause splatter. More thorough drying or a slower intial ramp to allow drying to occur before a boil or "splatter" temperature is reached may aid your problem.
Electronics Forum | Thu Sep 07 11:02:29 EDT 2000 | Travis Slaughter
Maybe its not splatter, in my experience a sloppy operator can get paste on contacts and just one sphere can rune them and can look like splatter.
Electronics Forum | Fri Sep 08 04:45:17 EDT 2000 | PeterB
As per Travis's reply it could be something other than the reflow process. Another good one is if the printed PCB's have been cleaned down due to print misregistration etc.. If not properly controlled paste residues can remain distributed about the p
Electronics Forum | Fri Dec 16 11:04:23 EST 2005 | chunks
Over all time will be dictated by your conveyor speed. Your conveyor speed will be dictated by your products time above liquidous. Time above liquidous is dictated by the manufacturers specification. Time and temp before reflow will have to be ach
Electronics Forum | Thu Jul 07 17:08:28 EDT 2005 | Inds
how fast are you ramping your profile..and how long are you soaking it.. are you giving enough time for the flux to get activated...
Electronics Forum | Wed Jan 14 06:42:38 EST 2004 | tommy
We see spattered(spitting of flux or solder to nearby area) solder/flux on gold fingers.We view the gold fingers area under 30x before reflow and it is cleaned but after reflow we see flux droplets or solder on gold fingers. We tried to changed a new
Electronics Forum | Thu Jul 14 04:28:45 EDT 2005 | lloyd
Folks, Thanks for all the info and suggestions but let me add a bit more to the pot. Our products work in a harsh environment and are classed as safety critical. Customer returns are our biggest concern, we don't get very many and feeling here seem
Electronics Forum | Wed Sep 13 08:23:59 EDT 2006 | davef
We get a more active flux.
Electronics Forum | Wed Sep 13 09:15:19 EDT 2006 | Rob
Hi Peter, Out of the 1.5 billion components we shipped last year, we had 3 components back for solderability issues. All 3 had been taken out of their vacuum packaging and left to oxidize for a number of weeks. We don't see it as an issue, but we
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