Electronics Forum | Wed Apr 08 14:46:34 EDT 2009 | boardhouse
The things to ask your board supplier would be: 1) Was the Pre-preg material that was used on this board within its Shelf life? and ask for the Incoming inspection CofC for the Pre-preg material. 2)Was this order shipped from Stock - this is why
Electronics Forum | Tue Jun 02 12:57:15 EDT 2009 | operator
Hello, I have searched endlessly to get a good description of how these are manufactured and exactly how they are supposed to work. I have yet to find anything comprehensive. Our CEM ships our PCBs to us in plain cardboard boxes with Conductive Corr
Electronics Forum | Mon Jul 13 07:25:09 EDT 2009 | hcarrasco
Hi everybody, > We recently start to use an ultrasonic stencil cleaners for our stencils. > It' work well, but after some time, we saw a lot of fiducial that the black > epoxy have been partially or totaly remove. I want to know if someone h
Electronics Forum | Tue Jul 28 20:11:14 EDT 2009 | hohk
Thanks Davef! 3M's product description of "3M™ XYZ-Axis Electrically Conductive Adhesive Transfer Tape 9719 is suitable for attaching low surface energy (LSE) EMI shields to electronic and electrical devices where high temperature (up to 400C) is re
Electronics Forum | Tue Aug 18 22:22:43 EDT 2009 | comatose
Assuming you want to run 8 hours a day and 5 days a week, you need a sustained throughput of 2.5k components per hour. With fine pitch, futzing around, setup, etc you should really look for machines rated in the 4k to 5k per hour range. That's not sc
Electronics Forum | Tue Oct 27 15:53:23 EDT 2009 | smtspecialist
Sr.Tech is absolutely right !!! This is where I had started, by changing all 4 brushes on the motor then I changed the connector since it was turning black (Mydata have a retrofit connector assy for that!, you can do your own also!) After trying thos
Electronics Forum | Wed Sep 16 18:25:47 EDT 2009 | larob57
(http://forums.xbox-scene.com/index.php?showtopic=691556) I can make some more pic's for you to see and I will post them in photobucket.Go to my page at this link and then click on my album (http://s1007.photobucket.com/albums/af192/repairman52/)
Electronics Forum | Fri Oct 09 10:57:25 EDT 2009 | clampron
Omid, I have used the DRS24 for many years and have had similar problems with what you are talking about. I do not have any documents but I will tell you what I have seen. It sounds like an inconsistant collpse of the BGA. If one side of the BGA col
Electronics Forum | Fri Jan 01 10:17:49 EST 2010 | jeffreyj
Long time no update. We ended up buying a used Quad IIc for something like $2500 + shipping - no kidding - through CAE. They originally wanted $5,200 but they wouldn't commit to saying it was operational and we wouldn't commit to buying it if they di
Electronics Forum | Fri Nov 13 08:27:43 EST 2009 | herman
Your customer is very unreasonable to demand void-free BGA SJs. Minor voiding is not a condition for rejection per IPC-A-610D, J-STD-001D, or even J-STD-001DS (Space addendum). Having said that, let me tell you that the voiding has little or nothing
