Electronics Forum | Wed Aug 02 16:47:44 EDT 2006 | Merle
Should drying be done after aqueous wash? If so, how long and at what temperature?
Electronics Forum | Wed Aug 02 21:36:14 EDT 2006 | Chunks
It depends on the water quality of your final rinse too. Too dirty and pools of water will trap residues on your board. If let to evaporate, these residues can stay on your board.
Electronics Forum | Thu Aug 03 16:42:48 EDT 2006 | Merle
The cleaner does have a dryer, but does not remove all moisture - we can see that. It is functioning - we can see that too.
Electronics Forum | Thu Aug 03 18:35:45 EDT 2006 | russ
So what are your current drying parameters? can you adjust temp and time? is this a batch cleaner that may have some shadowing from the way it is loaded causing hot air to not hit certain boards? Russ
Electronics Forum | Wed Aug 02 17:39:54 EDT 2006 | russ
Well i guess you would not have to dry the boards but let me ask this, Are you hand cleaning water soluble flux in a sink? Never seen a cleaner without a dryer. Anyway temp and time for drying is easy to figure out. When boards are dry you have i
Electronics Forum | Wed Feb 11 14:55:52 EST 2015 | erezah
we received assembled PCBs with spots that look like a bleach spots all over the PS and CS . The board house said that this is normal due to flux aqueous wash process. Can it cause problems (e.g. corrosion ) in the long run or cause issues when wor
Electronics Forum | Mon May 09 11:29:05 EDT 2016 | jpal
I wanted to bump this up. I am having the same problems. I cannot convince folks it is a solder mask issue and not our process issue, even though it shows up after wave and wash. I can heat the boards and even send them back through the wave preheate
Electronics Forum | Thu Feb 12 12:30:16 EST 2015 | stevezeva
I remembered something from the TechNet a long time ago about heating the board with a heat gun to see if the white spots disappear. I searched the archives and found this from Bill Kenyon: Quick identification of solder mask white spots- if it is t
Electronics Forum | Mon Feb 13 13:34:53 EST 2006 | pjc
Look for the following machines: Aqueous Technologies ECD EMC Austin American The above mfrs. make "industrial" grade dishwashers for assembled PCB de-fluxing. Search any of those names followed by "..... batch cleaner", and your search engine will
Electronics Forum | Tue Jun 03 03:46:07 EDT 2014 | akasi
Is there a peelable solder mask which can withstand an automated aqueous wash ? I need to prevent water ingress into SMT modules during the wash cycle.
winsouce.jpg)
