Electronics Forum | Tue Jun 24 13:46:21 EDT 2008 | bschreiber
I know it is not what you want to hear, but first and foremost, you must consult your local regulating agencies and here is why: Solder paste contains heavy metals. We are all familiar with the problems associated with lead, but lead free solder pas
Electronics Forum | Sat Jul 16 03:59:31 EDT 2005 | pyramus
Thanks Everybody!!!
Electronics Forum | Fri Jun 08 08:53:08 EDT 2001 | onset
Hi our company is currently using a water soluable paste. We have heard that no-clean solder paste has gotten alot better over the years and are thinking about making the switch. Our main concern is that our solder joints will not look as good as t
Electronics Forum | Tue Jun 24 12:26:33 EDT 2008 | dyoungquist
We are purchasing an ultrasonic cleaner to clean pcb asseblies that have been produced with water soluble flux based solder. After cleaning a batch of assemblies, the water in the cleaner will need to be disposed of. My question is: Do we need to
Electronics Forum | Wed Jul 02 12:32:30 EDT 2008 | hegemon
We use a "water Eater" to boil off the water, it escapes as water vapor. The residue we collect and dispose of as part of out Hazmat process. Keeps everything out of the drains.
Electronics Forum | Tue Jun 07 18:51:40 EDT 2005 | tony19
I need to know about the quality of water to clening and deionization degree. Thanks
Electronics Forum | Tue Jun 07 20:19:31 EDT 2005 | davef
That depends a great deal on what you are cleaning and how clean do you want to get the substrate. We've seen cases where 0.1 uS-cm was insufficiently good and others where 10 uS-cm was more than sufficient.
Electronics Forum | Tue Jun 24 14:47:25 EDT 2008 | bschreiber
There is also an article in the March 2007 issue of U.S. Tech magazine that reviews ultrasonic cleaning technology for PCBs titled "Reducing the Cost of Misprinted PCBs". The information is also relevant to post reflowed PCBs. A PDF copy of the art
Electronics Forum | Tue Jun 24 12:42:35 EDT 2008 | slthomas
Your flux residues may be acceptable for your drain, but the solder balls won't be. You'll need to filter and dispose of the filters per your local city, county, and state regs. Either that or just boil the water off and dispose of the dry remains wi
Electronics Forum | Mon Jul 18 00:00:35 EDT 2005 | adlsmt
I have nothing to add technically but we have been washing no-clean for years. Use very clean filtered DI water to avoid the white residue issue and some good detergent or sopanifier and you will get great results.
