Electronics Forum | Tue Sep 13 04:58:57 EDT 2011 | Jacki
Dear Mosborne Thanks for your knid advice. Yap, now I posted 2 photos showing the solder condition before and after wave soldering. Just reminding, the board in the photos had been already soldering in Reflow Process. Hope, you guys will have more a
Electronics Forum | Tue Oct 11 09:30:17 EDT 2011 | davef
UL746 Standard for Polymeric Materials is used for testing plastic enclosures used in electronic assemblies. Look here http://www.ul.com/global/eng/pages/corporate/contactus/faq/industries/plastics/ We're unaware of UL involvement in solder. Bare b
Electronics Forum | Fri Nov 25 04:10:21 EST 2011 | bwjm
Hi, I am facing some problems on my soldering joint. My operators perform the solder and left the assembled PCBs on the WIP rack. After 1 week (Due to shortage of components),the solder joint of the components darken. Is it caused by oxidation? If ye
Electronics Forum | Fri Nov 25 09:27:09 EST 2011 | fjtxra
Dear All, I´m looking for a low temp solder paste with Lead. I know that, with lead free, is common solder paste with bismuth for low temp in Pin in Paste line, but one customer aks me about low temp solder paste with lead. If anybody knows about and
Electronics Forum | Fri Mar 23 00:12:55 EDT 2012 | posinpcbfactory
J-STD-003B prescribes test methods, defect > definitions and illustrations for assessing the > solderability of printed board surface > conductors, attachment lands, and plated-through > holes utilizing either tin/lead or lead-free > solders. Th
Electronics Forum | Fri Apr 20 01:42:37 EDT 2012 | thmeier
If you extend the pads you get the effect that the solder below the component is pushed to the outside land which results in a very low standoff of the component, deteriorate the overall quality of the solder joint. Hot air (pencil or some of the sem
Electronics Forum | Fri Jun 29 07:45:05 EDT 2012 | tommyg_fla
It sounds like the flux is not holding up during the soldering operations. That would account for the webbing, etc. Also is the problem specific to a certain board type or lot code of boards? Do you think that your boards are outgassing during solder
Electronics Forum | Thu Jul 05 17:40:21 EDT 2012 | ck_the_flip
DaveF, What is your prediction if one tries to put a solder iron to it? Will the component bridge? I know hot-bar soldering is more common for things like Flex Circuits (with silver-filling epoxy), etc. and not so much for things where standard so
Electronics Forum | Tue Sep 18 21:48:26 EDT 2012 | vergara1
Sorry. I don't see any solder balls. > > To me, it > looks like the solder wetted the pad and then > pulled back. It's called dewetting. It's a > defect. Ask your supplier for a SEM analysis. I'm > interested to know what he / she says. I see
Electronics Forum | Wed Oct 17 09:16:44 EDT 2012 | engineerjim
We are going through the motions of acquiring and setting up a new to us wave solder machine. My question, is any utilizing a solder/flux containment pan or other type system beneath the wave to help keep areas around the wave solder machine cleaner
