Electronics Forum | Mon Oct 03 12:11:18 EDT 2005 | PWH
Soon we will be manufacturing board assemblies on our SMT lines that will utilize both lead and lead free water soluable solder pastes. I have read some discussion about change-over from lead to lead-free jobs related to machine cleanliness, etc. H
Electronics Forum | Fri Oct 07 09:18:39 EDT 2005 | russ
If you're using non-lead free parts then you don't have a pbfree assembly so why worry about marking it anyway? We apply this artwork after the assembly has been completely engineered for lead free. Artwork can be covered up with mask or whatever if
Electronics Forum | Wed Oct 05 15:03:40 EDT 2005 | Amol
depends on what you want evaluated! you can thermal cycle the BGAs and the examine the x-sections to determine failure modes at different stages of thermal cycles. you can do a stress test and corelate the # of thermal cycles with the microstructu
Electronics Forum | Tue Oct 11 13:50:21 EDT 2005 | stepheniii
you take the stencil which is contaminated with basically a toxic substance, add a solvent (alcohol) then use compressed air to blast it all into the air you breathe. I used to use foam wipes that were pretty good. I've also seen thick clothe ones t
Electronics Forum | Wed Oct 12 11:08:12 EDT 2005 | Mike
Hly, The solder ball in your picture looks just like the countless BGA solder joints that I�ve produced over the past 8+ years. We've had a good number of these joints X-rayed, cross-sectioned, and thermally stressed. Some say that the stretched loo
Electronics Forum | Fri Oct 14 09:21:36 EDT 2005 | lupo
According with temperature vs. wetting force diagram 245-250C/degrees is better, so lower temperature than 500F means better solder fill. If the speed is too lower the solder suck out form the hole. Usually 120-150cm/min. is good. (2-4s contact
Electronics Forum | Fri Oct 14 15:44:30 EDT 2005 | fastek
Yes....interesting. Word is this better be successful for them or they are done. At first glance my issue would be what impact do solder paste "dots" have in the following areas compared to stenciled paste: 1) Controllable with regards to volume 2
Electronics Forum | Thu Oct 27 01:17:33 EDT 2005 | adlsmt
You should also check out YesTech. Both companies should give you in house demo's and be willing to leave a machine there to try out for 30 days. They are with out a doubt only as good as the programmer. I think the support from Yestech would be bett
Electronics Forum | Tue Oct 25 07:32:12 EDT 2005 | prakash
My company provide service in terms of repairing the cognex vision card used in the Dek 265 GSX and 288 machines, and certain MPM and Camalot machines. I believe the Gemini II uses the 5000/5200 series vision card. Do contact me if you're interested.
Electronics Forum | Tue Oct 25 09:20:10 EDT 2005 | meritajs
Hi, We have problem with y-axis offset at YM84 After setting the ORIGIN machine operate exactly but after sometime y-axis recieves offset bis 5-10mm.After repeated setting ORIGIN Y-coordinat became exact. The same things take place if we operate in W
