Electronics Forum | Sat Feb 14 13:28:47 EST 1998 | ASHOK DHAWAN
I am beginer in BGA assembly and am confused in selection of pick and place option. As per book on 'implementation of BGA Technology-by 1995 aeic inc. states that BGAs reflow is quite forgiving and you need only Mechanical centering of PBGAs. The IPC
Electronics Forum | Sun Apr 12 08:49:12 EDT 2009 | mki
Hello, I bought used QUAD IVc MKII with transport in "as-is" condition, powered it up (without air and PCB on machine) and all axes (X, Y, Z AND T(heta)shows signs of life. Machine is performing HOME positioning self test. I am not familiar with QUA
Electronics Forum | Sat Jun 04 12:11:49 EDT 2011 | davef
Q1) How to identify on good or bad RF shield that could contribute to dewetting? A1) We use Alloy 770 and 752 [German silver] for our RF shields. We have never seen a solderability issue, even aged stock solders well. * Nickel Alloy 752, Nickel Silv
Electronics Forum | Tue Sep 14 13:38:33 EDT 2010 | rayguide
There is problem with the alignment of BGA Balls. Check for any vibration. http://hubpages.com/hub/SMT-Reflow-Soldering-Equipment
Electronics Forum | Wed Aug 09 09:54:36 EDT 2006 | russ
Use ENIG, plated finish will be too thick and make for a brittle joint. ENIG is self limiting so this condition cannot be present. To ensure that the bond is strong for BGA you must ensure that process is under control. The correct reflow profile w
Electronics Forum | Wed Mar 10 21:55:57 EST 2004 | Dreamsniper
Has anybody here could provide me good infos regarding BGA rework Kits other than the Flextac Stencil. Also on what sort of fixtures and toolings they provide to help me align the rework stencil onto the BGA pads. Thanks in advance... Hi to Dave F.
Electronics Forum | Mon Apr 23 11:31:23 EDT 2001 | Cal
You may have answered your own question. If SSD is the end all save all there would be more people using this technology. I view SSD as an option to have flat planar pads. I also know the price per Board is more then "standard" boards. The sample b
Electronics Forum | Sun May 31 11:14:48 EDT 2015 | visionbot
Looks good. Have you done any work on feeding > form part tubes? I have a back burner project > trying to speed up the changover on our machine > with the vibe feeders. VisionBot works with cut tape SMT, is not necessary to have advanced mechani
Electronics Forum | Fri May 15 00:07:38 EDT 2015 | aapsmt
there can be so many different causes. can be component library height issues. step program z axis offsets - i have seen accidental positive values entered so the components are literally dropped onto the pcb haha. but it does depend on the size of
Electronics Forum | Wed Dec 15 19:31:26 EST 2004 | Thomas Denison
We have a ceramic BGA that the component supplier has misaligned the spheres in the fixture so they slant .007" out of alignment from the substrate pads. When the devices are tested at the component manufacturer this alignment issue also causes the
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