Electronics Forum | Thu May 09 08:36:18 EDT 2019 | solderkingchris
Hi, You can work on improving stencil design, having the perfect profile and other process improvements but it may be the paste itself letting you down. We have put a lot of work into developing our solder pastes to significantly reduce voiding. Y
Electronics Forum | Tue May 07 10:36:38 EDT 2019 | slthomas
Probably just means you started out with an optimal profile. I suspect that not everyone does. ;) It seems like we did have some luck with profile adjustments in one instance with some QFN's with a large thermal pad. Like I said, though, the profi
Electronics Forum | Mon May 06 11:45:32 EDT 2019 | slthomas
There are quite a few papers out there on the subject. Just enter "SMT void reduction" into google or other search engine and take your pick. That said, slow ramp rates and paste volume reduction are a good place to start. Although I haven't tried i
Electronics Forum | Thu Feb 02 10:10:20 EST 2023 | tommy_magyar
Perhaps google this, as you will find very interesting articles. For scientific explanation look up solder fatigue on Wikipedia with references added. A more in depth explanation you can find on the Digikey forum where you will find other people like
Electronics Forum | Sun Apr 11 11:39:52 EDT 2010 | manchella
When we have sent some of motherboards for reliability testing in a tird party laoratory. It is found that when Dye&Pry is done after 600 cycles of Thermal Cycling, in LGA socket only one of the corner solder joing had 100% type 3 crack. All other so
Electronics Forum | Thu Jun 25 16:07:44 EDT 1998 | G. Hamblett
Looking for articles/data comparing the quality/reliability of mass reflowed SMT solderjoints versus hand soldered SMT solderjoints.
Electronics Forum | Thu Nov 19 10:24:14 EST 1998 | Brian Co nner
Currently, I am having problems with a AMP Mictor connector at the wave process. These connectors have both SMT leads(topside) and thru-hole leads. Even though we have re-designed the board for via issues. We still see some of the SMT leads re-fl
Electronics Forum | Thu Jun 25 18:28:23 EDT 1998 | Earl Moon
| Looking for articles/data comparing the quality/reliability of mass | reflowed SMT solderjoints versus hand soldered SMT solderjoints. As solder joint quality most often is subjective - that is visually compared with graphic examples, IPC is the B
Electronics Forum | Fri Sep 01 03:06:20 EDT 2000 | Adelina Baggayan
Hi!, Can anyone help me with problems with Solder voids after reflow curing on D2PAK heatsinks? I would like to remove the gas from the solder paste; can centrifuge help?How many minutes should a solder paste in a tube be processed in a softener? Ho
Electronics Forum | Mon Jan 07 20:31:15 EST 2002 | davef
While not a Motorola 860 BGA user, we see that on other components. In fact, some of the ErsaScope adverts show the effect. WHAT CAUSES THIS? Generally, the design / layout of the interposer has been the cause of this appearance. IS THIS A CONCER
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