Electronics Forum | Thu Jul 28 14:13:52 EDT 2005 | rsmith@z-mar.com
It is important that the ESDS device, the operator, and the work surface maintain the same elctrical potential. ESD events take place when objects of different electrical potentil come in contact with each other. When these different charges equalize
Electronics Forum | Mon Dec 12 18:03:15 EST 2005 | Diane
Yes to be quite frank and stright foward your trash cans and bags do affect ESD. Esd also tends to jump thereore you do not actually have to touch the parts to create electrial overstress to the parts. As was mentioned in a previous posting there a
Electronics Forum | Tue Jul 12 20:19:22 EDT 2005 | Tom
Don't mind Sam Adam's and Asahi beer... I'll send you a tantelising pint of Guinness, cool and with a fresh creamy head if you can help me with the following.... What do I do about lead free stencil design? Is there a guideline anywhere? Most lead fr
Electronics Forum | Tue Jul 12 06:13:30 EDT 2005 | dougs
A while back we checked out all our manufacturing equipment for lead free capability, we thought our soldering irons would all be fine as they can reach temperatures well in excess of lead free alloy melting points. Last week i was speaking to someo
Electronics Forum | Wed Jul 13 15:26:32 EDT 2005 | russ
The problems we saw had to due with the Flux I believe. We saw what I would call poor coelescence and the residues were very hard for us to clean with our Water only cleaner. I will not lie and say I worked on the process very much. Since we alrea
Electronics Forum | Wed Jul 13 19:47:06 EDT 2005 | Darby
This works for me with ENIG finish and a SAC305 NC paste Reduce all pads by -2mil on all sides ie 0.050" x 0.050" becomes 0.046" x 0.046" EXCEPT Anything smaller than 30mil; -1.5mil Anything smaller than 20mil; -1mil Anything smaller than 15mil;
Electronics Forum | Fri Jul 15 18:21:55 EDT 2005 | dggjr
We have Kester 256 no-clean spec'd as an alternate paste. I bring some 256 in occasionally to make sure it still works as a backup. The last batch I brought in was bridging like crazy. Scraped it off the stencil, put our regular Alpha back down an
Electronics Forum | Thu Jul 14 16:07:16 EDT 2005 | saragorcos
Here is a link to a specific article about cleaning no-clean assemblies: http://www.residues.com/pdfs/Clean_No_Clean.pdf Our facility does a lot of contract cleaning and cleanliness testing for various companies around the world, and that study s
Electronics Forum | Fri Jul 15 08:32:40 EDT 2005 | stepheniii
Now is when you find out if you have a good sales rep for your solder. I've seen solder reps eventually get around to responding. And I've seen some that would be in the plant that day to help you out. I even know a couple who would give advice even
Electronics Forum | Thu Jul 14 11:52:16 EDT 2005 | davef
Sure you can use SPC charting on the wave setup parameters to warn of impending problems. Examples of useful points of analysis are: * Dwell * Temperature * Pot analysis Certainly there's a range of other process controls that could be monitored.
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