Electronics Forum | Fri Apr 18 14:25:51 EDT 2014 | horchak
what is the technology? Is there fine pitch, double sided, number of layers, lead free? If the pcbs are not of the highest quality you may be set up for failure with no clean process. Couple things to look at is your paste flux content versus medal
Electronics Forum | Thu Apr 06 10:21:40 EDT 2006 | patrickbruneel
Copper dissolution is a major issue in lead-free soldering, but only when you use OSP boards. Nickel based plating eliminates the problem.
Electronics Forum | Wed Jan 04 03:08:12 EST 2023 | msirifat
Hello Stephen, thanks for the advice. We are producing LED TVs & we have a facility for SMT and manual insertion. We are also thinking of changing the board finish from OSP (due to its shorter shelf life) to ENIG/Immersion Tin.
Electronics Forum | Tue Feb 01 14:21:24 EST 2000 | Dennis VanBuren
We are considering the use of Immersion Silver for a PCB surface finish. We currently use Immersion Gold surface finish, which has served us well. However, recent discussions on the cracking of corner joints on large pin count BGA packages, with the
Electronics Forum | Fri Aug 30 00:47:53 EDT 2002 | TLe
Dave, you did not understand my problem right. We don�t get paste on the PCB in the printing phase of process. I have seen also poor wetting on OSP, as you descriped, but that is very unusual. I think generally OSP is better than gold/nickel if spea
Electronics Forum | Wed Sep 07 16:53:15 EDT 2005 | GS
Contact Cookson Electronic, they can support you with OSP solutions (ENTEK---) new formulations for Lead Free apllication. Regards GS --------- from a 2003 Cookson presentation: Objective Although Existing ENTEK� PLUS CU106A technology is suc
Electronics Forum | Fri Apr 09 20:28:14 EDT 2004 | Ken
I have experience in this. My company offers Lead free SMT and Wave soldering. I have processed ImSn, ImAg, Enig, OSP in both smt and wave. Yes, silver leaching will occur. Yes, copper leaching will occur. High tin content solders disolve everyt
Electronics Forum | Mon Apr 26 17:45:26 EDT 1999 | Earl Moon
| | | Earl said, in essence: | | | | | | | Justin is absolutely right ... | | | | | | | | Again, Entek is not much more than a flux coating ... | | | | | | | | Metallic coatings protect best, as we all know - especially those electroplated. Those
Electronics Forum | Fri Sep 24 09:48:28 EDT 1999 | Shane
I am developing a DOE for evaluating SMT adhesives. I would like to evaluate 3 different vendor dispensing adhesives. I currently have the Heraeus PD955M and the Loctite 3609 and 3618 selected for evaluation. I would like to add another manufactur
Electronics Forum | Tue Mar 10 22:16:56 EST 1998 | Steve Gregory
Jeremy, I'm gonna make a couple of assumptions by "reading in between the lines" of your email: 1. You're using no-clean paste. 2. This is only happening on the second side. You tell me if I'm wrong about this... First thing, if you're only experienc
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