Electronics Forum | Thu Jan 31 10:20:04 EST 2013 | rjohnston58
Need your help with a referee call on solder balls. See attached pictures. Engineering believes the solder balls and splash in pictures violate IPC-A-610E-2010 section 5.2.7.1. Purchasing on the other hand believes these are acceptable. Info: balls a
Electronics Forum | Fri Mar 01 03:16:01 EST 2013 | grahamcooper22
Solder paste flux formulation can make a difference when soldering to nickel silver...due to the alloy containing metals that oxidise easily like zinc and nickel then the flux has to be able to cope with the surface oxidation when the parts are in th
Electronics Forum | Wed Feb 20 18:21:49 EST 2013 | caurbach
A question for all you wave experts out there: We run our wave with a constant flow over the back plate. I know it's recommended that we set the back plate so that the solder sits just at the top of the back plate with surface tension keeping it fr
Electronics Forum | Thu Apr 25 22:41:24 EDT 2013 | jaimebc
Evtimov, thanks for your reply. Yesterday was our first day of running 99.999%. We were running for weeks with 99.99% Nitrogen purity and we just were having all kinds of problems with the miniwave not being consistent. We had a wave offsets at 75,
Electronics Forum | Thu Apr 25 22:42:06 EDT 2013 | jaimebc
Evtimov, thanks for your reply. Yesterday was our first day of running 99.999%. We were running for weeks with 99.99% Nitrogen purity and we just were having all kinds of problems with the miniwave not being consistent. We had a wave offsets at 75,
Electronics Forum | Wed May 01 11:31:38 EDT 2013 | jaimebc
Stephen, Bill, Thaks for your input. We are currently waiting for nozzles since the ones we have are badly oxidized. We do have a deoxidizing gel that we got from ERSA, not sure if it contains Adipic Acid, but it is what was suggested we used. Once
Electronics Forum | Thu May 02 14:58:20 EDT 2013 | stephendo
Kurtz had a guy that was great with the machine. I strongly suggest that you watch the wave height test a few times in the morning then at lunch and at the end of the day. Look where the solder goes up to on the probe. If it doesn't work consistent
Electronics Forum | Sat May 18 10:21:09 EDT 2013 | davef
isd.jww: Comments are: * Current thinking has flux volatiles being the major contributor to voiding, not scavanging by via * I have no reason to think that 0.3mm via won't gladly accept solder. Plug them, if that's a concern. * If your concern is ina
Electronics Forum | Mon May 20 23:55:44 EDT 2013 | kumar_antom
Thanks to everyone for your answers... Delta T represents the maximum temperature difference between the hottest and coolest part of the assembly.........so if we take a profile,the hottest point would be on the solder pad and the coldest would be o
Electronics Forum | Wed May 29 18:52:59 EDT 2013 | navworx
Would like opinions on which brand of leaded water soluble solder has the longest print life. we're currently using Alpha WS-809. Each board goes through the printer every 15 minutes or so, and we wind up re-printing most boards as the solder isn't
