Electronics Forum | Fri Jun 21 03:11:29 EDT 2013 | rollon65
Hi Bobpan. Thanks for the reply. I had already tried red stickers as suggested in the manual, then blue then silver but none of those worked so white was my last resort. I'm running 3 machines in tandem and they all start at the same time so stopp
Electronics Forum | Mon May 12 04:26:00 EDT 2014 | gazelle
Hello - I am looking for a source to supply low thermal EMF solder - can anyone provide pointers ? In the past a cadmium - lead alloy was used for this, but these are banned (RoHs) ... - the aim is to minimize thermo-couples on a very sensitive 4 lay
Electronics Forum | Tue May 13 17:53:54 EDT 2014 | anvil1021
Hello Michel...this might be a bit of a battle finding the low thermal EMF material that you are looking for. The first one that comes to my mind is Bismuth Selenium Telluride, with either a nickel or cobalt doping agent. Silver went away from this
Electronics Forum | Mon Aug 04 23:25:28 EDT 2014 | madhuranatha
Let me thank you for the reply. We are manufacturing products which are fitted on the aircraft. We are using SN63Pb37 solder paste for PCB assembly. Of late one of the solder paste supplier recommended SnPbAg for better solder-ability & reliabi
Electronics Forum | Mon Aug 04 23:27:05 EDT 2014 | madhuranatha
Let me thank you for the reply. We are manufacturing products which are fitted on the aircraft. We are using SN63Pb37 solder paste for PCB assembly. Of late one of the solder paste supplier recommended SnPbAg for better solder-ability & reliabi
Electronics Forum | Mon Apr 27 14:39:38 EDT 2015 | davef
Anirudh: When board fabs talk "surface finishing" they're talking about the solderability protection that you'd like on the solderable copper component mounting pads that you laid-out for each component: * Bare copper pads corrode very quickly * Corr
Electronics Forum | Fri Oct 16 12:41:29 EDT 2015 | deanm
Do you have a solderable surface (walls)? It looks like most walls have a silver arc at the top but some do not (especially the last link) which I interpret that it has been plated (in most cases). Is it possible that the component does not have suff
Electronics Forum | Fri Feb 26 23:54:48 EST 2016 | padawanlinuxero
Hello guys Guys I am looking for a IPC 4552 can someone help me with a digital copy, we are a small company and having lots of problems with a ENIG board that goes thru the solder wave and sometimes the golden pads, well they dont look golden more l
Electronics Forum | Tue Apr 26 09:29:26 EDT 2016 | davef
I've got good news and bad news: GOOD: I love Ag2 solder it's the best, most well behaved, reliable, couldn't ask for a better general purpose solder. BAD: It's leaded. I'd be concerned about embrittlement issues when soldering to gold that was 10 t
Electronics Forum | Wed Feb 01 03:17:10 EST 2017 | rob
Ok, that's small - I think you may need a special semi-conductor printer for this - positional accuracy on a "normal" SMT printer is no more than 20 micrometres from memory. In my semiconductror fab days we were printing with a positional accuracy
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