Electronics Forum | Tue Apr 15 21:24:41 EDT 2008 | davef
We find it curious that: * Heat slug pad for Q19 didn't take solder, indicating a pad [board] solderability issue. * Signal termination pads for Q19 didn't flow well, indicating a poor thermal recipe or a pad [board] solderability issue. * Signal ter
Electronics Forum | Tue Jul 20 15:10:00 EDT 2010 | vetteboy86
Recently we have expereinced solder issues with our reflow process. The issue is random and doesn't effect every assembly. I'm seeing extreme solder wicking, no solder flow onto the pads, only onto the leads of the components. I have tried to hand
Electronics Forum | Wed Jul 28 08:47:08 EDT 2010 | vetteboy86
by viewing your posting i came to know this is > solder ability issue which is because of > marginable solder ability of PCB / > components, > > just ensure that issue due to > PCB or component . check the msl of of substrate > / component. v
Electronics Forum | Thu Jul 22 16:30:59 EDT 2010 | dyoungquist
It is likely that the pads that will not solder have been contaminated. There is something on the surface that is preventing the solder from flowing.
Electronics Forum | Wed Jul 28 09:15:46 EDT 2010 | vetteboy86
I took a pad that did not have any solder flow (wetting issue with pad) and not reworkable with soldering iron, and scraped with an exacto knife. After scraping the pad soldered fine. Any suggestions?
Electronics Forum | Wed Jun 22 01:57:28 EDT 2016 | sachinverma
we face the problem to last month dry solder issue.when we found PCB is dry. (PTH not fill not properly)then we change the parameter like flux Tank pressure increase 130 to 250. after these activity PCB is ok no dry solder found......but problem is o
Electronics Forum | Tue May 29 10:08:17 EDT 2007 | aj
Hi Dave, The customer is supplying a new batch as this batch just doesnt want to solder. aj...
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 | Sun Dec 06 21:31:47 EST 2009 | rajeshwara
Attached is the BGA BALL soldered underneath reflow profile , plz check and advice.
Electronics Forum | Mon Oct 03 19:15:32 EDT 2005 | cn
is this a single brd or multi up array? What is the thickness? where were the brds made, state/country? I had an issues with a brd which was fabed in mexico during the humid months there was mosture trapped in the brds which caused many strang things
