Electronics Forum | Fri May 16 08:13:26 EDT 2003 | radney
We are a mixed volume facility and we are doing our utmost to achieve 55% utilization on HSP's (UIC 4797's and 4791's) We are basing this on a world class metric. I am wondering if anyone else out there is measuring utilization, what sort of result
Electronics Forum | Fri Jun 27 14:52:00 EDT 2003 | davef
Running a spare board with each job would be expensive. Consider running boards: * That were scrapped by your fabricator. * Without components. Admittedly you loose a measure of the contamination provided by your component suppliers, but if it's a
Electronics Forum | Sat Sep 06 21:50:09 EDT 2003 | Hoss
Sr. Assuming you are processing the garden variety 63/37 paste on FR4 substrates, a good starting point is to plan for 3.5 to 4.5 minutes of process time on the board. If you measure the total heated length of your oven and you use the range above,
Electronics Forum | Mon Sep 08 11:30:54 EDT 2003 | clarkk
A customer recently questioned our use of the EIA curves for derating SMT devices for increased ambient temperatures. The European method (CECC) is much more severe in derating power ratings of devices as temp increases, but there are differences in
Electronics Forum | Wed Sep 10 12:01:07 EDT 2003 | clarkk
A customer recently questioned our use of the EIA curves for derating SMT devices for increased ambient temperatures. The European method (CECC) is much more severe in derating power ratings of devices as temp increases, but there are differences in
Electronics Forum | Tue Sep 16 10:58:03 EDT 2003 | swagner
I am currently having a discussion with a pcb supplier about inadequate hasl thickness, we are measuring below 40 microinches of hasl when our spec calls for 100 microinches as the minimum. Our supplier came back with the statement the entire indust
Electronics Forum | Tue Sep 23 18:48:57 EDT 2003 | ericsbrown
We have an application where we are applying a heatsink with a thermal tape that has pressure sensitive adhesive (psa) on either side. Does anyone know of an off-the-shelf heatsink press that we could use to apply a consistent, measured force for a
Electronics Forum | Tue Sep 30 02:11:05 EDT 2003 | msimkin
We are having a problem with one of our chip sets. We have had a sudden change in performance, detrimenatally, and we beleive it may be a result of a change in die size. we need to prove this. Does anybody know a good contact or company who specialis
Electronics Forum | Mon Oct 06 17:16:02 EDT 2003 | pjc
Yes, the OmegaMeter and IonoGraph are test equipment to measure ionic contamination. Either of those units should enable you to sort your inventory boards. for more info about this equipment, go to: www.cooksonee.com/products/scs/CoatingSystems/Ionic
Electronics Forum | Thu Dec 11 00:00:22 EST 2003 | david2002
Does anybody have the measurements for the dimensions of the CyberSentry fiducial calibration board. This is a board used to set the machine up if paramter files are lost. Our board has gone missing and cyber optics has a long lead time. We can easil
