Electronics Forum | Mon Aug 24 06:12:31 EDT 2009 | ghepo
joanne please pay attention, each heavy no-clean flux residues not completely heated due to hand soldering becomes a moisture absorbing conductive pathway, causing electrical leakage. So I suggest you to clean well the board after hand soldering or
Electronics Forum | Mon Apr 09 20:55:46 EDT 2012 | action_101
I forgot to add that we are using a 3 mil stencil. It seems like to me that may be there isn't enough flux left when we reach liquidous?? About half of the solder spheres do melt and wet on each pad, but the top half of each solder joint is just the
Electronics Forum | Thu Nov 15 09:29:29 EST 2012 | anvil1021
Maybe this piece of information will help. In China (just returned from visit) there are many factories that are using a dual temperature process using SAC305 or Sn100C and 42/58. Apparently this allows them to run their through hole parts through re
Electronics Forum | Wed Mar 19 08:38:13 EDT 2014 | davef
I can't picture much of what you're saying, not for nothing, I'm just not connecting. During assembly, solder mask can affected by heat and chemicals. Typically this would be during: * Soldering * Cleaning I will tell you this: Not to defend assem
Electronics Forum | Wed May 03 20:24:22 EDT 2000 | Dave F
MF: I know of nothing that addresses your question directly. Let me suggest: * Technical types at your solder supplier should be able to help. * "Effect Of Intermetallic Compounds On The Thermal Fatigue Of Surface Mount Solder Joints" PL Tu, et a
Electronics Forum | Tue Apr 11 10:30:46 EDT 2000 | Jeremy Smith
I am having a problem with some joints on a 100 pin pqfp and few different soics on one particular board. When viewed a 8x with a "Mantis" inspection scope the joints look as though they wetted to the ic leg but when probed the leg will pop loose.
Electronics Forum | Fri Jun 29 14:15:00 EDT 2001 | stefo
This is a question about complying with J-STD-001 solderability testing. Do any of you have your vendors certify that the components and PCB's that you buy from them comply with the solderabilty requirements spelled out in the -002 and -003, in lieu
Electronics Forum | Mon Nov 11 09:39:02 EST 2002 | dphilbrick
Cool! What will they think of next! Maybe solder with no lead or parts with thousands of connections you cant see!
Electronics Forum | Mon Mar 13 16:56:26 EST 2006 | slthomas
He's a troll. Nobody could be that goofy without trying.
Electronics Forum | Sat Apr 07 00:41:35 EDT 2007 | Haris
Thank you all for giving me good knowledge.
