Electronics Forum | Mon Jul 10 21:01:06 EDT 2000 | Dave F
Edmund: Responding to your questions: 1 What is purpose of using DI water to wash a PCBA? Compared to tap water, DI water is less likely to leave: � Metal cations on sensitive components. � Salts of Ca, Mg, and other stuff on metals on the assemb
Electronics Forum | Mon May 15 11:03:13 EDT 2006 | Pitt Bull
Can lead free components/assemblies be contaminated if reflowed in a reflow oven for leaded process?
Electronics Forum | Fri Jul 13 16:45:37 EDT 2007 | losersk8er
The Contamination has proven to be pretty random, lots of stainless steel though in fact two cases in the past two days. As far as I know all machinery is cleaned regularly as well, even the stencil washer itself. The boards we make are 90% (at l
Electronics Forum | Wed Jun 17 16:08:37 EDT 1998 | upinder singh
We are facing a problem of high contamination on boards after wave soldering. We want the contamination to be under 24 ugm/inch square. We are using a no clean flux with the spray fluxer unit of wave soldering. The contamination is higher on the end
Electronics Forum | Mon Mar 17 07:00:34 EDT 2008 | ectan5117
Hi, During SMT process, i found that solder splash on the gold pad. The distance between the COB pad with component pad is about 1.25mm. My question is what material can used to cover the COB pad without bringing contamination. And i am welcome to
Electronics Forum | Wed Jun 17 16:19:10 EDT 1998 | Ryan Jennens
| We are facing a problem of high contamination on boards after wave soldering. We want the contamination to be under 24 ugm/inch square. We are using a no clean flux with the spray fluxer unit of wave soldering. The contamination is higher on the e
Electronics Forum | Thu Aug 16 23:30:02 EDT 2001 | fastek
Not exactly sure what your specific requirements are but I am in the process of clearing out a major OEM's SMT facility. Lots and lots of general production equipment is available such as stencil carts, production benches (with and without lights and
Electronics Forum | Thu Nov 24 01:45:44 EST 2005 | pavel_murtishev
Good morning, My advice is to put two Topaz-Xii in line. Machine programming is rather easy (with PPS and GPP that AssemleOn offers), but final teaching on machine is strongly required. If you want to prepare programs fully offline you�ll have to pu
Electronics Forum | Mon Mar 12 08:27:00 EDT 2007 | rgduval
Have you checked the parts for contamination? Are the voids out of spec? IPC allows some voiding, especially with lead free solder. Component contamination can cause this to repeat, as well. Try pre-tinning the component in question, and see if s
Electronics Forum | Sat Oct 20 00:34:57 EDT 2001 | kenbliss
Hi mike The solution is simple but two fold, first your process needs to be changed a bit, you need additional feeders to pre-stage the new P/N run and prestage the extra feeders for reload as certain higher volume components exhaust. The idea is t
