Electronics Forum | Sun Feb 01 18:24:52 EST 2004 | Dean
Ok, maybe I'm missing something here: It's a no clean flux type AND your going to wash it? Why not migrate to OA Flux and just run DI water with Ion-Exchange beds? Benefits: No need for ultrasonics No need for chemical isolation No need for cleani
Electronics Forum | Wed Oct 02 12:06:59 EDT 2002 | dragonslayr
Scott - all sounds good. My primary concern is the residual flux left behind under the BGA. Will moisture entrapment become a concern over time? I believe that may be dependent on the flux formulation. I know that some no clean fluxes actually become
Electronics Forum | Sun Feb 01 15:07:10 EST 2004 | rick
Pete C Thank you for answer. Yes we have to remove solder flux so we need chemistry for no-clean flux residue. What kind of damage can i expact from ultrasonics device? you said damage IC and clock types?. We have all components in solid encapsulat
Electronics Forum | Thu Oct 05 07:11:35 EDT 2017 | emeto
Now you are putting your assembly to vibrate with frequency of 30-60kHz. What kind of flux/paste are you using? If it is NC there is no reason to clean. If it is water wash, you should consider a proper way of cleaning it according to your paste/flux
Electronics Forum | Tue May 03 10:57:22 EDT 2005 | Frank R.
We received about 5K assembly boards from china. They left flux residu on top of the board and the flux they use was different than us. RESULT ... we use a translucent cylicon to cover the board and it was not possible to dry the cylicon because of
Electronics Forum | Mon Nov 16 10:50:50 EST 2009 | ppcbs
I agree customer is being overly stringent, and that their is a possibility that BGA's have voids prior to installation. If you determine that the BGA's do not have voids prior to installation I suggest you slow down your ramp speed to allow the flu
Electronics Forum | Thu Oct 05 12:10:36 EDT 2017 | duchoang
Thank you for your replies. We use No-Clean Paste and some customers do not want any residue left around solder joint even so, so little. They want the residue washed completely. If we use water-soluble flux, we still need to wash, anyway. Their conc
Electronics Forum | Sun Sep 17 22:50:20 EDT 2000 | Sartor
I am looking for a solution for gold finger cleaning and repairing.Can anyone recommend good solution(s)?Also,can anyone recommend a good flux paste source(s)?Thanks.
Electronics Forum | Sat Apr 23 20:07:22 EDT 2005 | molosse21
Does someone use Ultrasonic washing machine to remove nc or rma flux residu from the pcb??? I have no experience with this device and I plan to use this for a very small production lot Do you recommand this ??? How are your results ??? What kind
Electronics Forum | Wed Oct 04 21:21:21 EDT 2017 | duchoang
For some reasons, we need to wash our BGA boards in ultrasonic washer in order to clean all flux residue under BGA. We use Ultrasonic cleaner with 40 KHz. Should we or shouldn't we do that. Pros and Cons ? Any idea appreciated.
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