Electronics Forum | Mon May 26 09:31:41 EDT 2008 | davef
What steps are taken in low residue wave soldering to assure the proper amount of flux is applied prior to soldering? * Too little flux can result in poor solder flow. * Too much flux can result in corrosive residues left on the board after soldering
Electronics Forum | Wed Oct 01 10:01:15 EDT 2008 | davef
We've never used the 99*C lead-free solder you mention. We have used a leaded solder that can form a 93*C eutectic solder. So, we had to be sure the service temperature [of the solder connections] as below 80*C.
Electronics Forum | Fri Jul 24 23:20:11 EDT 2009 | umar
Hi Dave, Thanks on your feedback, May I know the how's the contributing of Moisture content of bare board and the Thickness of the copper plating in the PTH to the solder ball and solder splash during hand soldering process ?
Electronics Forum | Tue Sep 01 20:43:06 EDT 2009 | davef
Please explain "adhesion of soldering is not uniform at the tips (soldering ends)." For example: * Is the "tips (soldering ends)" the component leads? * What is the component? * What is the finish on the component? * What process is causing this issu
Electronics Forum | Thu Dec 24 04:23:49 EST 2009 | leeg
Has anyone had any experience of using High Melting Point Solder paste in production. We have started to trial some boards using the Solder Paste and are experiencing poor solder joints and solder joints that look grainy.
Electronics Forum | Tue Mar 16 16:59:09 EDT 2010 | davef
Most often 'solder graping' refers to poor solder wetting, where the solder paste has partially melted, but has not coalesced or flowed. Sometimes this leaves the outline of the partially melted solder balls still visible, giving the appearance, to
Electronics Forum | Wed Jun 02 19:54:04 EDT 2010 | davef
Here's one take on what you seem to be asking: * After a point, more solder is more stress than the proper amount of solder would produce. * Asymmetrical amounts of solder produce more stress than balanced amounts of solder would produce.
Electronics Forum | Tue Nov 02 03:24:33 EDT 2010 | Jacki
Yes, we use solder paste,solder bar and solder wire from different manufactureres for 1PCB assembly. And, what JAX said, we never mixed solder paste from different manufactures and used.
Electronics Forum | Fri Aug 03 09:19:17 EDT 2012 | john1961
If still interested you may want to review information on our GW-10-HT Solder Fountain System at http://www.ddmnovastar.com/wave-solder/solder-fountains/gw-10-ht-soldering-fountain Good luck with your search.
Electronics Forum | Fri Mar 25 04:28:54 EDT 2011 | grahamcooper22
Are the solder balls what we would call ' mid chip ' solder balls where a single or sometimes a few larger solder balls are positioned somewhere along the side of the chip or are they the solder paste powder particles spread around the pads ?
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