Electronics Forum | Thu Oct 30 21:55:13 EDT 2014 | davef
Why soldering issues? I'd guess the nickel is corroded. It is very difficult to solder to oxidized nickel. Your SAC305 would get kicked all the way down the conveyor by nickel oxide. A lack of Ni-Sn-IMC formation will confirm this dewetting . What's
Electronics Forum | Thu Jun 26 07:44:07 EDT 2008 | kmeline
Hello, we are having issues with two assemblies where the Melfs will lift or not solder on one end of the components. Has anyone had issues with this in the past? What can be done to help this? Thanks
Electronics Forum | Wed Mar 30 08:06:17 EST 2005 | davef
Considerations are: * If the nonwetting is component lot specific, the could be solderability issues with that lot. * If the nonwetting is is a broader based component issue, the solderability protection on the component may require a different reflo
Electronics Forum | Fri May 27 11:37:13 EDT 2005 | james
But I think the customer is returning these because they are not working in the field due to soldering issues.
Electronics Forum | Tue Aug 09 12:31:11 EDT 2005 | Rob
Are they being shadowed by larger components?
Electronics Forum | Tue Aug 09 13:25:18 EDT 2005 | russ
Try cooling them down in the profile.
Electronics Forum | Mon Nov 14 12:23:56 EST 2005 | russ
What is the finish of the PCB? What type of paste are you using?
Electronics Forum | Wed Mar 01 10:03:11 EST 2006 | dave
we are using a no-clean flux.
Electronics Forum | Mon Mar 06 03:55:18 EST 2006 | dave
Outcome: More heat required... thanks to all who contributed.
Electronics Forum | Thu Jun 26 08:20:42 EDT 2008 | cyber_wolf
Check your pad spacing on the board. Look at the IPC specs for pad design.
