Electronics Forum | Fri Jul 15 12:41:56 EDT 2005 | russ
You are not wrong in monitoring the Product (your really not monitoring the process). This methodology is valuable if your process is unstable (SPC is used to stabilize process). There is value in "real time" inspection of a process's product as lon
Electronics Forum | Mon Jul 18 18:36:01 EDT 2005 | slthomas
"thomas, why isn't it process control," Minute detail, really. Defects aren't a measurement of process parameters, they're the result of them (and a few other things that have been mentioned). SPC measures process parameters. It is preemptive, and
Electronics Forum | Fri Feb 16 09:16:19 EST 2007 | John S.
We conducted a DOE to establish our print setup parameters. These will of course depend on the paste you select, and the thing just runs. The techs store the head in a ziplock bag when not in use. When they need to run, they just attach the head,
Electronics Forum | Wed Feb 28 10:27:55 EST 2007 | Rob
Hi John My understanding of your post is that you are asking if anyone has tried to enforce MSL levels or reflow parameters onto the component vendor/manufacturer. Is this your question or am I mis-interpriting it? If that is the case you will not
Electronics Forum | Tue Mar 27 15:25:43 EDT 2007 | ianchan
Hi Dave, Thanks for your input; what I understood the gentleman was describing was a ISO/MIL/ANSI standard that actually plots out a chart (e.g. timeline/frequency of use versus environmental variable parameter, where the variable may be dust, oil,
Electronics Forum | Tue Feb 03 03:57:37 EST 2009 | sachu_70
Hi George, I would suggest you to re-look your process parameters, especially for the pre-heat temperatures and the amount of flux deposited. The mask properties and that of your flux also play a role, but you could zero down to the root cause after
Electronics Forum | Tue Jul 28 01:39:32 EDT 2009 | Sean
Hi All, I have some question about flux residue resulted from non clean process as following: 1) Under what kind of circumstances that flux residue could appear? This residue does not happen during production but did appear after some period of ti
Electronics Forum | Tue Sep 08 16:18:20 EDT 2009 | proy
We have an Orion which has been running very well. We just started to run production of a board with NO changes from the last run about one month ago. Today, however, the vision system is not recognizing parts. The scan image on the monitor looks goo
Electronics Forum | Mon Sep 21 00:11:14 EDT 2009 | darrenj
We have a TP9 with a centering motor issue. (TPSYS Ver 2.5.3) The error message F-MOT-SETDYN C/3 Upper endpoint outside limits is shown during C-motor initiation. I've looked in the service program and also the parameters in TPSYS but can find no m
Electronics Forum | Mon Mar 21 02:54:58 EDT 2011 | kemasta
Hi Dave I agree with the 2nd point (sloppy process management) if the failure rate is higher than 5%. But this is 0.083% case, and only happen once in the blue moon. As I study about the re-flow profile for the last whole week, current parameter se
