Electronics Forum | Mon May 30 06:36:16 EDT 2011 | mbnetto
This is a requested point from some customers. It's part of the audit check points. But I agree it´s important for the process. You can garantee the stencil is in a good condition after many time using it. If your stencil looses the tension, you can
Electronics Forum | Mon Jun 13 09:25:58 EDT 2011 | milroy
Hi I have seen some of our multilayer PCBs are having delamination issues even after baking them in the ovens. Does anybody faced this issue before? The problem occured after reflow process and wave solder process as well. The temp profiles are well
Electronics Forum | Fri Aug 19 02:16:40 EDT 2011 | ppcbs
In my opinion destructive methods went out with the stone age. At least they did at our company. We specialize in non-destructive defect analysis. We can determine where the failure is i.e. assembly process, fab defect, BGA defect or plating proce
Electronics Forum | Wed Aug 24 03:17:21 EDT 2011 | richieoreilly
Hi, Thanks for the info. The current process is a standard SMT hand soldering process. The time does not include cleaning, prepping and pre-tinning. Its just the time for the re-flow of one joint itself. We are waiting on some new tips to experimen
Electronics Forum | Fri Dec 09 11:00:47 EST 2011 | davef
Using common wire size and through hole diameter, we'd expect that the wave solder process would completely fill the through hole and that you wouldn't need to get involved in providing stencil openings, pasting the through hole or reflowing the jump
Electronics Forum | Tue Jan 31 13:26:31 EST 2012 | joeherz
Anyone doing consigned work in the EMS industry has had this issue, I'm sure - Customer says they want lead free processing at the quote stage - PCBs they supply are tin/lead HASL. In this case, no HDI components and no BGAs. What is the latest acc
Electronics Forum | Fri May 11 15:33:36 EDT 2012 | markhoch
I personally believe that you money is best spent on improving your process. An automated printer will help make your process more repeatable, thus easier to control. An AOI will not improve your quality, it will only make your defects easier to dete
Electronics Forum | Wed May 16 11:19:08 EDT 2012 | fulgen
Hi Guys, I´m looking for information about processing smt components on flexible printed circuits (printing, SMD assembly,reflow soldering and laser cuting). These flexible circuits comes from a roll of 300 mm width. I found some information about ro
Electronics Forum | Thu Jun 14 21:37:53 EDT 2012 | kmots15
Warm De-Ionized Water and a brush? If they water soluble... Realistically, We need to know what flux your working with. Typically the manufacturer will recommend a cleaning methods on the TDS, easiest to stick with that. If they are high reliabili
Electronics Forum | Fri Jun 22 20:20:24 EDT 2012 | hegemon
Is this a new process or are you experiencing a change in results from an already established process? We have KISS Slective Soldering (2 machines)and we do not have these issues, but we are not doing NC either, we are fully aqueous, using Nitrogen
