Electronics Forum | Wed Jan 31 08:26:36 EST 2007 | geb
I think it might be the feeder banks, that is causing the problem. I've tried picking a SOT-23 component using head 2 spindles 1-4 from a rear feeder bank and it is picking off centre. Doing exactly the same, but putting the feeder in a front bank it
Electronics Forum | Mon Jan 29 10:41:10 EST 2007 | davef
Many high rel assemblers reball their LF BGA with SnPb balls. In other less demanding environments, SnPb paste with LF BGA produces acceptable reliability.
Electronics Forum | Tue Jan 30 13:26:07 EST 2007 | realchunks
Several paste manufacturers make an interim paste designed for such mixed applications. They work pretty good and give you the strongest joint available.
Electronics Forum | Tue Jan 30 14:16:47 EST 2007 | CK Flip
Search the great archives: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=10216&#Message40990
Electronics Forum | Wed Jan 31 11:02:19 EST 2007 | rmitchell
Hi, We think the problem was the z orgin on the X,Y, table. After calibration and adjusting the proper things are much better. Thanks to everyone. Rob
Electronics Forum | Tue Jan 30 08:51:44 EST 2007 | Machinebuilder
I am in the mid-Atlantic US. I need to solder PCB's to a large copper heatsink. Does anyone know of local (or not so local) ECM's with vapor phase capabilities? How about induction? Thanks!
Electronics Forum | Tue Jan 30 12:41:36 EST 2007 | john_smith
Machinebuilder, We have Vapor phase ovens in our facility. We are located in OHIO. Let me know if you need more information. Thanks John
Electronics Forum | Fri Feb 02 17:39:27 EST 2007 | davef
Machinebuilder: Click on the link just to the right of "Author:" [John Smith] in the response to your quiry in order to email the responder.
Electronics Forum | Fri Feb 09 17:27:59 EST 2007 | stockley
Nice try John, why don't you post them on Equipment Mart and put us all out of our misery.
Electronics Forum | Mon Feb 12 06:02:14 EST 2007 | mk
I think Mark may be able to help you out. Mark Strickland Marshal Space Flight Center MFSC Huntsville AL PO Box 707 MS K68 Huntsville, AL 35812 256-544-7432 mk
