Electronics Forum | Thu Jan 13 19:23:05 EST 2011 | bandjwet
We have a customer whom we have built boards for. They want a "cleaner no clean look". The process uses a no clean Kester 256 SN63 solder paste. After reflow the "residue" noted by the client is too much. We have tried a few things. We are a small
Electronics Forum | Tue Aug 30 10:46:27 EDT 2005 | lyrtech
Hi, I curently have an interesting challenge. But I don't have all the knowledge to solve it. One of our boards is used in RF applications. We noticed that the No-Clean flux residue makes interferences in the RF signal. Removing the flux residue so
Electronics Forum | Wed Aug 26 22:14:07 EDT 2009 | davef
The blue tint could be the result of etching of the tin in your solder connection during cleaning when using a slightly basic cleaning solution. Just about anyone can duplicate this by running a board 7 or 8 times through a cleaner with a saponified
Electronics Forum | Thu Jan 26 18:28:40 EST 2006 | MikeAJ
An adhesive style cleaner is primarily used as a "precleaner" for bare boards only. These machines are placed between the loader and the printer. The TekNek machines can be best compared to those disposable lint and hair rollers. The same type of rol
Electronics Forum | Tue Feb 01 12:02:56 EST 2000 | Mike Konrad
Your question may be answered in two parts. First, if you are using a water soluble (OA) paste, then water is an excellent �solvent�. Water, in one way or another, is used to clean all fluxes and pastes from PCB�s. In some cases, a chemical is add
Electronics Forum | Thu Feb 06 13:57:01 EST 2003 | D. Brian Davis
I need some feedback on aqueous cleaners. We currently use a Unit Design batch cleaner. We will be looking to upgrade our board washing process and batch sizes in the near future. I am looking for user info. on the advantages/disadvantages to using b
Electronics Forum | Mon May 19 19:32:50 EDT 2003 | Dave
Hello. We have a low profile LCC on a board. The clearance is ~ 2mils after reflow. Cleaning away residual flux with an ultrasonic 50C water cleaner caused some LCC and 0201 components to loosen. Should we stay away from the ultrasonic cleaner?
Electronics Forum | Mon Aug 22 11:17:20 EDT 2011 | williamaxler
We are looking at different ways that we can clean our assemblies and we know that they make ultrasonic cleaners that have a sweeping frequencies so they do not damage the parts on the boards. Does anyone have experience with this? Also who are som
Electronics Forum | Wed Apr 24 21:27:10 EDT 2002 | davef
50�C. * Boards are too hot to be cleaned. Yes, saponified cleaners will remove heat decomposed WS flux. Well, I suggested changing paste to another poster, because he mentioned overheated solder connections and I guessed that his white residue was
Electronics Forum | Wed Aug 04 00:22:17 EDT 2004 | Shean Dalton
and one more thought about your original question, if the flux does look really strange and out of place, then inspect the reflow oven. A great amount of flux condensation in the reflow oven's cooling zone can cause crystalized flux to become airbor
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