Electronics Forum | Fri Apr 03 08:22:36 EST 1998 | Scott Cook
| At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash pro
Electronics Forum | Thu Feb 09 10:29:37 EST 2006 | stepheniii
I worked at one place where they had a dishwasher. They had stopped using it by the time I got there. But if they had kept using it I would have gotten a clean glass and put it in to see how clean it came out. I think after a while with only one tan
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 | Fri Apr 03 02:52:42 EST 1998 | Jacqueline Coia
At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash proce
Electronics Forum | Tue Aug 14 16:25:49 EDT 2001 | Hussman
I thought Dan saw the delamination after wash - not baking? What temp are your dryers on the washer set at?
Electronics Forum | Tue Aug 14 12:18:02 EDT 2001 | nifhail
I experienced assembled boards delaminated after washed. You know...those old datecode PCBs that I was talking about a few weeks back ? I was forced to use it, and of course prior using it I've baked them. I've baked them at 125 Deg for 4 hours and/
Electronics Forum | Tue Aug 14 15:45:06 EDT 2001 | davef
BOARD BAKING SCHEDULE: Bake time depends on the board thickness and construction. For laminated FR4 PCB, we bake between 6 and 24 hours at 100�C. ROOT CAUSE OF THE PROBLEM: Heating moisture entrapped between the laminations of the board too quickl
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
