Electronics Forum | Tue Apr 22 03:46:19 EDT 2008 | fowlerchang
It is CSP reliability issue, which is the mobile CPU from Spreadtrum. All the tests passed and shipped to customer. They assembly them and tested but failed. After they reflow this CSP with hot air gun, some of the boards passed. We got some board
Electronics Forum | Thu May 01 12:46:19 EDT 2008 | dphilbrick
Thanks for the link Samir. Although this thread does have some good info in it I don't think it is hitting the exact point I am trying to resolve. This seems to talk to a one profile fits all for running lead and lead free paste. I want to know about
Electronics Forum | Tue Oct 07 16:19:34 EDT 2008 | mikesewell
If at all possible buy parts with 3% min. lead on the terminations. If this is not an option, "mitigate" whatever the finish is. Typically this means tinning with 63/37 all the exposed lead, not just the solder joint area. Several companies can d
Electronics Forum | Wed Feb 04 09:58:50 EST 2009 | dyoungquist
As was stated before, you need to have oven temperatures (profile) set such that you get good solder joints with the paste you are using. And definately run a profiler through yor oven to verify it is working properly. As for components, most data
Electronics Forum | Tue Feb 09 23:40:19 EST 2010 | glennster
OK Sergey, looks like no one wants to take this on. I will give it a shot and maybe others will add their 2 cents. The answer depends on what you want to inspect. X-ray inspection is based on the X-ray absorption properties of the materials in th
Electronics Forum | Thu Nov 03 16:47:52 EDT 2011 | hegemon
You need to define what it is you are inspecting for, and more importantly, what benefits you are trying to achieve with your acquisition of the technology? Inspecting post placement, post reflow, or both? Solder Joints? Through Holes? Part numbers
Electronics Forum | Fri Nov 21 11:00:27 EST 2014 | gregp
Hi J_Dub (Joe), Thanks for the input. Sounds like some fairly densely populated through hole assemblies. 100 solder joints per board is up to 50 parts per board (I know you may have DIP's so it could be less than 50). 24 boards in a panel x 50 par
Electronics Forum | Wed Apr 22 08:40:18 EDT 2015 | markhoch
Hi Myriam, I think we may need some more information. Is the Electrolytic (Aluminum) Capacitor placed more than once per board? If so, are all locations twisting? This would typically be caused by a thermal imbalance that could be design induced. (u
Electronics Forum | Fri Jul 29 13:30:43 EDT 2016 | gregp
Versatec specializes in the remanufacture of Contact Systems machines, most notably the CS-400E component locator with programmable cut and clinch. these machines are field proven over the past two decades and provide many benefits when utilized: 1.
Electronics Forum | Fri Mar 27 12:46:23 EDT 2020 | unisoft
Unisoft has been import gerber only for years to setup assembly, aoi machines, etc. *** Help for Importing GERBER only files for used in programming Assembly, AOI, Test, Selective Soldering machines (X/Y Center, Rot, Part#). Also allows you to cre
