Electronics Forum | Tue Aug 21 21:39:19 EDT 2001 | davef
1) why is No-clean (NC) the preferred process, for BGA mounting by SMT? Probably the same reason NC is the preferred process for mounting non-area array SMT components. 2) why is water-soluble (WS) not a hot choice? There�s not reason not to use
Electronics Forum | Mon Aug 16 04:38:18 EDT 1999 | Earl Moon
| Hello | I am looking for help in determining a simple (software based) method for testing the continuity of individual pins on an SRAM devices packaged in BGA. Can you help, or do you know someone who can help? Or do you know of an internet resouce
Electronics Forum | Fri Apr 15 09:10:09 EDT 2005 | Dhanish
The biggest problem I am having is the X-Ray and ICT could not detect this shorts.ICT could not detect because onboard measurement shows Zero even without the Hair line shorts.With Hairline there is no difference in the impedance value for ICT to fai
Electronics Forum | Wed Apr 13 21:47:32 EDT 2005 | Dhanish
In production,we are seeing high defect for Hair Line Solder Shorts for PTH connector and the Hair Line is too tiny that X-Ray and ICT could not detect.Any suggestion on how we can resolve or at least detect this upfront.
Electronics Forum | Mon Feb 18 17:27:03 EST 2002 | hgwells
Agilent has a great article on determining whether automated optical inspection (AOI) or automated x-ray inspection (AXI) is right for you. It's a PDF file that can found here: http://www.ate.agilent.com/EMT/LIBRARY/X-RAY/DOCS/59883661en.pdf To sum
Electronics Forum | Thu Apr 14 18:51:19 EDT 2005 | KEN
What side is the short occuring on. Topside or bottom (solder) side? 2. Pitch of hole pattern = ? 3. Your x-ray may not have the resolution or DSP capable of detecting this defect. How does your profile look? Is this a true short or the result
Electronics Forum | Fri Sep 12 22:57:13 EDT 2003 | Dean
What is the surface finish of the PCB? Tin? Imersion Silver? What flux is used in wave solder and / or SMT? I have much experience with silver migration and tin wiskers. Both can disappear during a reqork cycle. Both can be extremely difficult
Electronics Forum | Tue May 08 11:27:49 EDT 2001 | Eyal Duzy
I will review some of the advantages/disadvantages of AOI vs. X-Ray one by one according to the main differences that you may find between them. * AOI uses optics that can "see" only visible elements. X-Ray can "see" hidden elements. There is a ve
Electronics Forum | Sat Aug 18 23:40:22 EDT 2001 | CAL
We at ACI have both endoscopes and xray. We have used the ERSA Scope often and it is a great machine, but the cost is hard to justify the ROI.The ERSA Scope is in the $28K to $32K range. I had a chance to see OC Whites Endoscope and it was cool.Pric
Electronics Forum | Sat Apr 16 13:43:53 EDT 2005 | KEN
What about electo migration? I had (what apears to be) the exact same problem you describe. X-ray and ICT fails to detect micro shorts. However, in our test, the bench functional test would show a current overload. In some cases the electro migrti
