Electronics Forum | Fri Jun 18 05:36:55 EDT 2010 | elsey1987
Dear all friends, our company want to import JUKI SMT pick&placement machine to China,However, I really did not understand two recent clients,When I say their prices are higher,one of them replied to me:all of your first replies are always the same.
Electronics Forum | Mon Oct 18 11:43:42 EDT 2010 | hegemon
Use the forums nice search feature above. "Lead Free BGA" Lots of info. In short it seems the general consensus is that you are pretty much safe using your lead free BGA in a tin lead process, provided you run your peaks a little higher, and your
Electronics Forum | Thu Jan 27 04:02:00 EST 2011 | richiereilly1
Hi, We had a similar issue to this. When we examined the boards at x-ray there were no apparent defects, We sent the boards for Dye and pry testing and we found that there were crack or gaps between the paste on the PCB and the BGA ball. basically th
Electronics Forum | Wed Jun 08 13:41:56 EDT 2011 | swag
Two thoughts from me: 1)Are you sure the balls are collapsed? Have you looked at the perimeter from the side with a scope? From your x-ray, it appears you are correct in saying they are collapsed as the balls get smaller in a uniform fashion as you
Electronics Forum | Tue Jul 05 13:11:46 EDT 2011 | markhoch
Hi Bill, I agree with not cleaning the no-clean. If you're looking for a cleaner because one of your customers is requiring no residue be left on the PCB's, I'd investigate switching to a Water Soluable Process for those specific assemblies. (You'll
Electronics Forum | Thu Mar 29 07:37:45 EDT 2012 | davef
The current discussion about solder fountains has to do with copper dissolution. Broadly, copper dissolution is the weakening of copper traces where a trace and a barrel plating intersect due a loss of the copper into the solder. Longer contact time
Electronics Forum | Wed Feb 27 08:31:02 EST 2013 | anton99
We are a OEM and growing pretty fast. The like the idea of setting up common components on the machine. It makes sense from a set up perspective. All of our set up is off line but the set up usually lasts longer than the SMT run so we have some spora
Electronics Forum | Wed Aug 29 13:43:27 EDT 2012 | icin
Thanks to all of you that have replied and those that may eventually reply. We are feeling better now that you experts with many years of experience have not indicated that this is as common as ESD or Moisture Sensitivity Awareness to the point that
Electronics Forum | Thu Aug 30 13:26:40 EDT 2012 | joeherz
Appreciate all the replies. We have a good system in place with ESD tile floor, grounded systems/benches/etc and heel and wrist strap usage and monitoring. Good training program as well. We've recently upgraded to the 2007 version of the ANSI 20.2
Electronics Forum | Fri Nov 02 09:09:56 EDT 2012 | davef
Sure you can use it it with leaded HASL. Recognize that ... * Your Sn42/Bi58 will no linger be Sn42/Bi58 * Your leaded HASL will no longer be the same leaded HASL that walked in the door to your plant * Lead from HASL coatings can diffuse through the
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