Electronics Forum | Fri Mar 07 20:52:51 EST 2003 | Neil
With any kind of statistical study you must have some limits to which you can measure against. The whole purpose of generating a CPK is to ensure that the equipment under observation can meet these limits when used under normal operating conditions.
Electronics Forum | Mon Mar 03 08:33:54 EST 2003 | msivigny
Hello bphillips, I'm not surprised you're having difficulties with this size chip. As technology advances in product development continue to shrink package and real-estate size, the equipment and its automation must continue to perform it's desired f
Electronics Forum | Tue Jul 08 20:24:26 EDT 2003 | davef
AlCapone: Consider determining the responsible party according to their ability to deal with the complexity of collecting and analyzing the information required to determine your process capability index. For expample: * Reflow oven: Fairly simple,
Electronics Forum | Thu Oct 09 13:14:20 EDT 2003 | MA/NY DDave
Hi If I read things correctly you have quite a problem. I am inclined to scrap the entire LOT. I will give some hints at what to do as others have, yet you might want to bring someone in if the loss in revenue is high. I don't know your lot or run
Electronics Forum | Sat Dec 27 01:32:42 EST 2003 | Ian Chan
IMHO, depending on whether its a regular run model, or a properly designed/setup pilot run model, getting a mean 75%-95% First Pass Yield (FPY%) is possible as a benchmark target. This is derived from your manufacturing history capabilities, and requ
Electronics Forum | Mon Aug 09 15:49:16 EDT 2004 | celldude
We have definitely seen money saved. There is a lot less rework after reflow. Money is also saved in overtime. for example...when we are building a first article board with many placements, it is not always possible to get the first board through the
Electronics Forum | Wed Mar 02 18:46:02 EST 2005 | Austinj
The tendancy always has been "when in doubt, touch it up"... this is not the way to "verify the process" and is not the best strategy for multiple reasons (unessecary rework, additional labor costs, as well as making the solder joint more brittle, [i
Electronics Forum | Wed Mar 16 22:45:29 EST 2005 | MG Cyr
Thanks for the positive feedback. In addition our standard manufacturing validation, all of our Platform SM products (GSM, Advantis, Genesis etc.)include "on-board" CPK validation and "self calibration". In addition we do have a global relationship w
Electronics Forum | Tue Apr 26 15:21:11 EDT 2005 | russ
Sounds to me like they are thinking since they have a gold board that it must be processed lead free. This kind of thing is happening all over since OEMs are starting to think about pb free and sending their purchasing and engineering to these semin
Electronics Forum | Tue Aug 30 15:05:23 EDT 2005 | Shean Dalton
Dear Ing, Have you analyzed why some RF device aren't operational after washing? An assumption is that failures are related to the ultrasonic energy applied. Other possibilities are for poor rinsing, poor drying, inadequate washing on those failed