Electronics Forum | Mon Aug 29 10:33:55 EDT 2005 | SuMoTe
The NMG No Melt is what I currently use. I hadn't thought of replacing it with an oil. Will try it and see how it goes. Thanks for the replies.
Electronics Forum | Tue Aug 23 09:25:23 EDT 2005 | cyber_wolf
Is there any way to degauss the crt monitor on a Fuji CP6 machine ? I think we had someone put a magnet on one of our displays. Thnx, Sr.
Electronics Forum | Tue Aug 23 09:57:34 EDT 2005 | davef
Se�or Tech Look here: http://www.twobits.com/degauss.html We have no relationship, nor receive benefit from the company referenced above.
Electronics Forum | Tue Aug 30 09:18:35 EDT 2005 | Slaine
As Rohs parts with lead free solders dont wet as well your operator may be mistaking this for oxidisation. there is also the posibility that the parts are manufactured with HMP solder (92.5% lead) also rosh complient but the solder dose oxidise.
Electronics Forum | Tue Aug 23 10:59:37 EDT 2005 | cyber_wolf
Is there anyone out there using Zestron Vigon SC200 stencil cleaning solution? We were told that it can be used to clean SMT adhesive, water soluble, and no clean paste flux. Can anyone tell me anything about this stuff ?
Electronics Forum | Wed Aug 24 08:54:30 EDT 2005 | patrickbruneel
SEM to determine thickness and spectrum analyses to determine the metals forming the IMC. This will give you everything you would want to know.
Electronics Forum | Wed Aug 24 16:30:48 EDT 2005 | davef
Optical microscope or SEM work fine. You say, "I have found out that the method of measuring intermetallic compound(IMC) formation is quite questionable." What's the issue?
Electronics Forum | Wed Aug 24 09:42:23 EDT 2005 | james
That is what I was looking for. The profiles did not make much sense to me. We are getting alot of cold solder joints or bumpy solder joints.
Electronics Forum | Wed Aug 24 10:18:19 EDT 2005 | james
Well that Genius did it on this BGA. It does have a heatsink and absorbs alot of heat. It just stinks because the BGA cost over 1000 and I really can not scrap a board. But that first profile does not look correct for this board with the BGA esp.
Electronics Forum | Fri Sep 02 12:47:27 EDT 2005 | james
Thanks to all. I have it straightened out. We were running too hot and too fast and too long of a reflow time. I am running with Kic2000 and it works great. Thanks for all your input.
