Electronics Forum | Wed Mar 28 15:37:20 EST 2001 | pteerink
Steve, When you say "CAD input", do you mean centroid data ( xy locations ) or generic cad info straight from the layout software. ( so far the machines I have been looking at use centroid) What are your rates of "false failures" and how do your o
Electronics Forum | Mon Nov 06 21:06:13 EST 2000 | Dave F
Thomas: Wheeee, a 40% failure rate. Now, that make your boss chase you around the room won�t it? As you indicated, x-ray won�t do dip about helping to identifying problems [or ball cracks either]. Consider using an ERSA scope [er whatever they ca
Electronics Forum | Mon Oct 09 09:56:11 EDT 2000 | John
I've run up against the same problem that I know many of us in the industry face; our management wants to obtain a "world class" level of production. This has come up before, and I've looked through several responses dealing with ppm (dpmo), failure
Electronics Forum | Fri Jun 18 20:09:52 EDT 1999 | Dean
| Has there anyone bold enough to try this in their shops? My cubemate just got through telling me that at his last shop, they had bare copper boards (no HASL, no OSP, no nothing), with minimal solderability problems. | yes, 8 years ago I developed
Electronics Forum | Thu Aug 11 08:53:40 EDT 2005 | stefwitt
I�ve seen new table-top machines for $ 15,000 at exhibitions, but only one time and the same vendor didn�t show up the next time. Realistically, new machines capable of doing 0402 and 20 mil and a few kpph under $ 15,000 do not exist. Any used mach
Electronics Forum | Mon Jan 08 03:47:47 EST 2007 | tk380514
as someone had said before, check you stencil and have it redesigned. I design our stencils for my factory and have inproved quality in BGA , QFP and 0603 case sizes. we did have 1 prototype series that used 0403 chips btu we had brand new feeders an
Electronics Forum | Fri Jun 15 11:05:17 EDT 2007 | grantp
Hi, This is a little embarrassing asking this question, as I think I am profiling our oven incorrectly. I have been using the profile based on the solder paste specification, however we have been getting a large BGA chip coming more unreliable, and
Electronics Forum | Wed Nov 07 10:30:19 EST 2007 | grantp
Hi, I did an interesting experiment today, when we had some government people in our factory to visit us. I mentioned that we went lead free well before the deadline, and it's nice none of our people need to handle anything with lead content, (they
Electronics Forum | Tue Mar 23 10:46:48 EDT 2010 | oeidave
Hello Sibbe, Thank you for posting your questions. There are a few approaches to AOI with the majority being program driven. There are a couple of systems that are simply comparative in that you use the system to compare a golden board to others th
Electronics Forum | Wed Dec 29 15:42:34 EST 1999 | Mike Naddra
Justin, I would be currious as to your customers application, and if the temperature delta and rate are great enough to cause solder joint failures as a function of mismatched Tce then you may want to consider that even if you are able to identify
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