Electronics Forum | Wed Mar 20 00:55:01 EST 2002 | ianchan
Heyz...at this rate i'am losing my mind too! We have been doing the "looks good; look bad" approach, and backed it all up with Z-height paste measurements. Only thing there's this customer QA asking how we established those USL & LSL utilized in our
Electronics Forum | Wed May 15 10:55:35 EDT 2002 | geoff_goring
As I thought..... This is probably why most journals and standards I have studied hold shy of even attempting to predict shelf life. They certainly hold off of any predictions when based on accelerated life testing too. The component lead is a cop
Electronics Forum | Tue May 07 07:38:13 EDT 2002 | ianchan
Hi mate, checked with one of our egg-brains in the factory (freakin' workaholic still around at this time of night), he tells me that Ag-based PCB finishings share rather similar reflow temperatures for normal Sn/Pb applications. this means (if he i
Electronics Forum | Tue May 14 15:49:30 EDT 2002 | dason_c
Thank! Francois. I think that I also had a paper from Lucent, Handling of Highly-Moisture Sensitive Components. Is it the one which you mention above? I just would like to figure out. Per Desiccant type dry box, it claim that it can absorb the m
Electronics Forum | Tue Jun 11 17:12:29 EDT 2002 | mdmilward
Hello, Can I please get some help on finding formulas for calculation of surface mount pad sizes for stencil design and solder paste deposition. I've recently joined a company who has allowed their stencil supplier to develop the stencils based upon
Electronics Forum | Fri Jun 14 20:46:40 EDT 2002 | kenbliss
Dave, you are ahead of me again. I was thinking that this morning. however it clearly is a problem for him and I based the rest on my experience, anything can be improved but at what cost. If nothing else he can get more boards off his line at the
Electronics Forum | Wed Jul 03 11:37:36 EDT 2002 | fmonette
Dason, I apologize if some of the information sounds redundant but I don't think I explained my point very well (and the standard can get really confusing at times). I definitely agree with using C-SAM to look for internal defects. My only advise i
Electronics Forum | Mon Jul 01 22:10:55 EDT 2002 | ianchan
Hi mates, anyone has practical hands-on experience for the "Vectron" AOI machine, model: K2-AOI? appreciate any hands-on experiences shared on this issue. seeking everyone's comments +ve or -ve about this machine, based on its : 1) user-friendly f
Electronics Forum | Thu Jul 25 05:56:32 EDT 2002 | ericchua
Hello, Understand you have problem of cleaning adhesives from Dek Pump Print stencil. Well, we have a cleaning machine which able to clean solder paste and adhesives. And also, we are not using any chemical but use water-base detergent. We had few c
Electronics Forum | Wed Jul 24 11:18:01 EDT 2002 | kenbliss
I am not sure about the way the board is made, but I am sure that if you change your handling system to a tray based board handling system you will reduce these problems to a manageable level. Tray carts and trays are clearly the industry standard m
.gif)
