Electronics Forum | Tue Jan 06 09:23:05 EST 2009 | ludee_circuits
Dear All, Thank you very much.My customer confirmed root cause was solder paste problem.
Electronics Forum | Mon Nov 14 09:57:37 EST 2005 | davef
If the solder that you apply bonds well to the metal terminations of the transformers, your customers should have no solderability problems related to your components.
Electronics Forum | Tue Mar 25 17:08:51 EDT 2008 | Paul
Your customer forgot to apply solder paste to the PCB ?
Electronics Forum | Tue Mar 25 22:51:26 EDT 2008 | davef
This doesn't sound like a solderability issue. It sounds more like nonwetting.
Electronics Forum | Tue Mar 25 15:53:47 EDT 2008 | cyber_wolf
I am sure that you did a reflow profile.... right ?
Electronics Forum | Thu Jan 15 15:26:36 EST 2009 | wavemasterlarry
Almost made it a full year!
Electronics Forum | Tue Mar 25 12:08:53 EDT 2008 | ludee_circuits
My factory produces Printed Circuits Boards.Today, my customer says they encounter problem with solder ability issue. Some of the boards have difficulties during SMT solder flow. Could not stick to the pads and the components fell off. Those boards
Electronics Forum | Fri Nov 11 04:06:46 EST 2005 | arnold
we are manufacturer of molded type transformer. we have a trim and form process and its damage the pins of our units. the TIN insulation was being damage so we decide to immediately solder (wave soldering) the units to avoid oxidation. my question is
Electronics Forum | Fri Nov 11 04:35:06 EST 2005 | Rob
Hi Arnold, Some wave solder machines have a preheat function, that raises the board temperature before soldering. Some transformers use single use thermal fuses/TCO's inside, that trip at a set value (in a range approx. 70 degrees C to 180 degrees
Electronics Forum | Tue Mar 25 17:37:59 EDT 2008 | hussman
If the component "fell off" sounds like double sided reflow - which is most likely a profile issue. If the parts just don't solder, could be many variables. I've had supervisors accuse ovens for bad profiles cuase they had missing parts. Too bad
