Electronics Forum | Wed Apr 02 13:56:03 EDT 2008 | slthomas
So your golden board isn't a valid representation of your production material. I don't use AOI but it sounds like either you need a vendor that can guarantee the same part marking appearance as you originally programmed to (not likely) or you need a
Electronics Forum | Tue Nov 14 08:52:07 EST 2017 | davef
If you think the problem is occurring in the box and it is wide spread, consider replacing your solder paste with your paste supplier. There are paste formulations aimed at the solder balling issue that some LF pastes create. On tuning your reflow r
Electronics Forum | Wed Apr 02 09:56:59 EDT 2008 | patsama_n
Every time to create new AOI program we must manual set at bright lighting level for each component. then this case we think the parameter of AOI setting it not concern for this problem due to the golden board that we use to confirm machine before st
Electronics Forum | Wed Dec 13 14:17:26 EST 2017 | emeto
For the ovens you run the profiler and you compare graphs. For the AOI you should run these golden boards(boards that you keep for AOI test - might have intentionally implemented defects) once in a while and make sure you are getting the same results
Electronics Forum | Thu Jan 04 03:01:38 EST 2018 | buckcho
As always, our good colleague Evtimov is right about the AOI and oven. For the AOI you need to make a golden sample board(panel) and test if your machine can catch all defects that you simulated BEFORE the oven. Try to me as accurate to real defects
Electronics Forum | Tue Sep 16 19:16:11 EDT 2008 | hegemon
Hello everyone! > > I'm a student of electrical > engineering currently working on a thesis for my > BSc degree. It will be about post reflow AOIs and > AXIs, and I'd kindly like to ask you for some > help with it. > > I would like to know if t
Electronics Forum | Mon Sep 22 17:02:58 EDT 2008 | hegemon
You are on the right track Ismir. Essentially however, as the programmer of the machine, I am the one that creates the PCB with the errors to benchmark the settings for the machine. No secret lab though! :-) Easy enough for most any AOI machine to
Electronics Forum | Sat May 28 04:56:23 EDT 2005 | WDLau
Dear, I am looking for the supports, specification, etc of the solderiability of Hot bar Reflow process with: A). FPC plating with sb/pb= 90/10, to be mounted to B) B). Golden plating PCB Please kindly input, As far as I know the melting point of
Electronics Forum | Sat Aug 11 13:37:02 EDT 2007 | shing
I am a fresh SMT engineer. I am now facing a problems, solder contamination on Golden Finger nearly about 1 year. I don't know what going on. I have checked the cleaningness of stencil, solder paste handling,IR re-flow profile and even PCB surface
Electronics Forum | Fri Jan 18 07:46:34 EST 2008 | adlsmt
The reason we are using laser rather reflow is because the Osram Golden Dragon part my customer needs to use is not rated for reflow. I would prefer to stay away from hot bar as there is maintanance required on the tips, Unitek had a pretty sweet mac
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