Electronics Forum | Tue May 17 08:00:26 EDT 2005 | Bob R.
We went through this with one PBGA supplier recently and they were able to get the problem under control by fixing some of their molding processes that were inducing residual stresses. You can really see it in a thermal moire where you measure warpa
Electronics Forum | Tue May 17 10:11:54 EDT 2005 | russ
I would use a foam fluxer since spraying rosin will make the stickiest nastiest mess you can imagine. 18 layer board huh? You will want convection preheat, both top and bottom preheaters, preheat tunnel of at least 4-5', a chip wave, laminar flow w
Electronics Forum | Wed May 18 04:17:05 EDT 2005 | kvanzill
Hello All, I recently accepted a position in a manufacturer in Mauritius and they have begun a little more then a year ago COB process which I am unfamiliar with and needing some help. We are using aluminum wire, the machine is Dias Automation model
Electronics Forum | Wed May 18 18:36:22 EDT 2005 | global
Ok here's one for ya. We have a DEK 260 with a Cyberbectic vision system, 1 of about only 50 made as told to me by a DEK service Tech. So if anyone has operated one of the other 49 you may be able to help. The Service techs at DEK are not familiar en
Electronics Forum | Fri May 20 02:04:26 EDT 2005 | kvanzill
Hello, I have been having random yeild problems with my COB process where we have non-sticking issues and no parameters have been changed on the machine from one assembly to the next. I recently inquired to the board manufacturer's about thier proce
Electronics Forum | Mon May 23 10:09:45 EDT 2005 | Rob
Hi Lupo, The MVT Supras we had far out performed the Omron systems on fault detection & false calls, and were nearly 1/3 of the price. But it depends also on what operator skill & dilligence you have to make sure the data goes in accurately & is tr
Electronics Forum | Tue May 24 08:54:02 EDT 2005 | stepheniii
I have experience with Mirtec, and overall I think it actually performed better than advertised. Although I have to point AFAIK all AOI machines are operator dependant. I was working at a company with around 8 runs a day, and such variety and ECO's
Electronics Forum | Mon Jun 20 03:37:43 EDT 2005 | MMunos
We have 3 inline Yestech systems in our facility. One system being used pre reflow for paste inspection and the other two for parts and solder. The systems work great for paste inspection (Better than what the sales guy told us). They are also very g
Electronics Forum | Mon Jun 20 16:48:24 EDT 2005 | Steve
Although I am sure that some of the postings here are legitimate, it is obvious that many of them have been written by AOI manufacturers or suppliers. This forum is meant to be a communication channel for process engineers, not salesmen. Please sav
Electronics Forum | Tue Jun 21 09:06:02 EDT 2005 | pci
Although I am sure that some of the postings here > are legitimate, it is obvious that many of them > have been written by AOI manufacturers or > suppliers. This forum is meant to be a > communication channel for process engineers, not > salesm
