Electronics Forum | Mon May 13 23:44:26 EDT 2019 | dami0629
if use tray cannot solve the problem, you can change from the design 1）Reduce the effect of temperature on PCB 2) PCB USE HIGH TG 3) BOARD THICKNESS TOO THIN 4) MODIFY THE BOARD SIZE 5) Reduce the V-CUT depth.
Electronics Forum | Mon Jul 01 09:33:08 EDT 2019 | dbuschel
if you can't change the PCB materials or design at this point, you might be able to reduce it somewhat through the use of fixtures or edge stiffeners. Unless it is a particularly thick board, I don't think the reflow profile would be the issue. The t
Electronics Forum | Mon May 13 06:38:41 EDT 2019 | relaycz
You need to give us a little more information. 1. What is the size of your panel? 2. Are there any heavy components? 3. What is the thickness of your board panel? 4. What kind of oven are you using? 5. Is it only a recent problem or ongoing one?
Electronics Forum | Mon Jul 23 18:42:50 EDT 2001 | johnmaetta
We are currently re-thinking our policy of no-clean and would like more information from users of both process'. Our assemblies exhibit residue and other 'contaminates' and this raises questions at our customer sites. Thanks, John
Electronics Forum | Thu Jul 26 13:31:52 EDT 2001 | Hussman
John, Are these spots the result of repair? I notice a lot of repair people love to squirt flux onto the board when they repair it.
Electronics Forum | Sun Jul 29 09:22:54 EDT 2001 | davef
Tough to say. The residues from fluxes vary according to the suppliers' forulations. Consider: * Talking to your supplier. * Running life cycle tests.
Electronics Forum | Fri May 12 07:41:15 EDT 2023 | tommy_magyar
Although I see the advantages in your method, not sure though how to deal with the following: 1. Your batch is actually only one board (or panel) - this would not work in a low volume manufacturing environment, unless there are other jobs set up on t
Electronics Forum | Mon Jan 27 12:02:00 EST 2003 | Mike Konrad
Dave is correct. No-clean flux + water = white residue (unless the proper chemical is mixed with the water). Additionally, no-clean flux + IPA = white residue. Many saponifiers work well as do other cleaning agents. White residue may also be a re
Electronics Forum | Mon Jul 23 20:28:17 EDT 2001 | davef
We run both NC and OA flux, although the majority of our product is run on OA. For application not requiring uBGA, we find the benefits of NC elusive, at best. What? .... Your customer recognizes that initially the NC res in non-ionic, but sticky.
Electronics Forum | Wed Jul 25 09:08:19 EDT 2001 | caldon
Our July 2000 empfasis article has a residue topic available for down load. http://www.empf.org (look under empfasis). Also, there are tons of Tech Pubs information available for down load via our web site as well. Caldon W. Driscoll ACI USA 610-36
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