Electronics Forum | Thu May 22 09:06:05 EDT 2008 | davef
While you're waiting for others to reply, consider this posting from the fine SMTnet Archives - http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=17279
Electronics Forum | Thu Oct 05 10:25:13 EDT 2017 | davef
Consider ... * National Physical Laboratory (NPL) [http://www.npl.co.uk] did an extensive amount of research on proper frequencies and power levels for ultrasonic cleaning, maybe in late 1980s or early 1990s. That report might help you sort through
Electronics Forum | Tue Mar 30 07:34:46 EST 2004 | TONY
We are running double side micro bga boards and we were told to run one side, wash them, put them in the oven at 125c for 1 hour and putting them in the dry cabinet until we run the other side. Is this necessary? It is time consuming for us to wait
Electronics Forum | Tue Jun 01 07:18:15 EDT 2004 | johnwnz
Abraham, it kinda depends on your BGA ball size, device height. The probem is that very few machines will manage to get cleanign fluid under a BGA and you certainly will struggle to get it dry. You would need to look at various supponofiers as well.
Electronics Forum | Thu Mar 20 13:22:27 EST 2003 | bmaheu
James, I've done some extensive studies cleaning BGA's while I was employeed by one the companies you are considering. In an attempt to avoid being commercial I will use general statments to address your question(s). The key to cleaning underneath
Electronics Forum | Tue Mar 30 20:04:19 EST 2004 | Ken
If speed is truly an issue, migrate to no-clean. However, this is not always an option. Why bake after 1st smt pass? Because you are probably not drying completely under the BGA components, and/or you are pushing water into the parts/boards/ vias
Electronics Forum | Wed Apr 21 20:08:37 EDT 2004 | Dreamsniper
Now the ball starts rolling. I'm lookin' for a new aqeous cleaner. Do I really need chemical cleaners or saponifiers, surfactant etc. for an Aqeous Cleaning Machine in removing OA or Water Soluble flux from under my 1.27mm Pitch BGA down to 1mm Pitch
Electronics Forum | Mon Jun 16 16:18:44 EDT 2008 | dphilbrick
We have used good industrial dish washers in the past. We washed very dense SMT boards with mulitiple BGA's. they always passed Ionic tests. You can buy these for as little as $500. The less expensive ones won't hold up to 140F water and suponifier b
Electronics Forum | Thu Dec 04 14:31:59 EST 2003 | irun
Hallo We are going to clean PCb after assembly (SMD and THT) due to conformal coating. It is small value production with elements on PCB like BGA, QFP. What you recommend or suggest to use : ultrasonic? , spray wash? or something like dish wash???.
Electronics Forum | Thu Apr 08 23:01:12 EDT 2004 | Ken
Didn't they do this on an old episode of The Brady Bunch? Your wash will have severe foaming problems!!!!
