Electronics Forum | Sun May 25 10:30:31 EDT 2008 | necdetozyonum
Dear All, I would like to take your opinion about the result that we have faced after cleaning the PC assemblies in a cleaning machine (Miele Dishwasher) with the cleaning detergent Qualitek Everkleen 1005. We use DI water for cleaning purpose in t
Electronics Forum | Fri Apr 16 12:47:48 EDT 2010 | boardhouse
White solder mask does have a tendency to yellow within the lead free environment. so double coating will not help any. I due believe the flux is a factor in the yellowing but due to the color is the main reason. Find out what brand of S/M mask they
Electronics Forum | Mon May 14 14:34:05 EDT 2007 | rgduval
I have to agree with Jax. We've had some successes, and some horrible failures using white-tin. Generally in solderability, and apparently related to the somewhat more rapid deterioration of white-tin finishes. We've run white-tin as an SMT only
Electronics Forum | Sat Dec 04 02:21:32 EST 1999 | Vinesh Gandhi
Hi All, I am facing a strange problem. One of my esteemed & valued customers has an unusual requirement of cleaning the board with IPA after soldering is complete. I am using alpha metals UP78 no clean sodler paste during reflow. This IPA cleanin
Electronics Forum | Mon Nov 16 14:01:31 EST 1998 | Earl Moon
| Has anyone heard of a process called White Tin for depositing a solderable surface on a pcb rather than the standard hot air solder leveling? | White tin is another take on the tin immersion process proported to eliminate problems associated with
Electronics Forum | Wed Jul 29 22:50:17 EDT 1998 | Dave F
| We are investigating alternatives to HASL finishes for more dense PWBs. OSP is not a good choice because of low solid flux and possibly long shelf life. Immersion gold is expensive and so far has been more difficult to wave solder. Has anyone ha
Electronics Forum | Mon Jun 22 17:50:13 EDT 1998 | Dave F
| Dear Sirs, | I need somehelp to know some sources for white epoxy UV curing SMT adhesive glue ( not alphametal and heuareus ) ,Please help with companies names and tel/fax numbers !! | Thanks all | Mohamed Ragai Mohamed: I'm not positive if all
Electronics Forum | Mon Feb 03 11:17:55 EST 2003 | Randy Villeneuve
White residues are a common problem when cleaning no-clean fluxe residues. The white residue forms when the flux residue is partialy removed, etc. Alcohol should not be your only solution for cleaning. In general, solvents may attack some plastic par
Electronics Forum | Tue Apr 11 11:47:56 EDT 2006 | amol_kane
Hi SMTnetters, I have a white residue coating all over my reflow oven innards (almost looks like white fungus). How can I absolutely be certain that it’s flux and not anything else?are there any tests available for this? I am planning to check the ov
Electronics Forum | Mon May 14 13:33:36 EDT 2007 | jax
Solderability!!! The CM in question has probably seen too many solder problems with White Tin in the past. We have had the same issues. To save us from spending too much time and money(verifying pure Tin plating thickness, Chemical leaching from th
