Electronics Forum | Thu Jul 05 13:47:10 EDT 2007 | arun2382
QFN assembled on a PCB indicates paramteric fails when tested. When the QFN on PCB is reflowed a second time, it recovers and passes testing. Visual, X-ray inspection revealed no anomalies. Cross-section images of solder joint revealed no anomalies (
Electronics Forum | Wed Mar 14 16:23:01 EDT 2007 | J
I am not sure Ersascope and X-Ray will tell you the results you are looking for. My experience with x-ray has proven that misalignment, voids, and bridging are really the only failures that can confidently be observed. You may have solder in place,
Electronics Forum | Wed Mar 14 00:34:46 EDT 2007 | pyramus
Hi Muhammad thanks for the reply. However, this is my current situation. We are currently using some BGA's with this kind of packaging BGA over BGA. I have verified solderability of the main BGA (below Bga the one w/c will be soldered to PCB) using
Electronics Forum | Mon Nov 21 08:01:44 EST 2016 | edgard_franca
Hello everybody, The company that I work bought a second hand Phoenix X-Ray model PCBA 100. We installed the equipament and waited about 4 hours for warm the x-ray tube, after that time was generated the image. I turned off correctly the machine bu
Electronics Forum | Wed Nov 14 10:23:51 EST 2001 | gzweig
This question and other issues on x-ray inspection of BGAs are addressed in the free PDF. publication available by e-mail entitled: Rapid and Effective X-ray Inspection of BGAs using "Signature Identification" Just place "send publication" in subj
Electronics Forum | Fri Mar 05 11:15:57 EST 2010 | rdubya
I've used phoenix x-ray for about 8 years with no issues. GE recently took over the x-ray division. worth looking into.
Electronics Forum | Mon Feb 06 16:56:01 EST 2023 | assuredtech
Depending on what the issues are Lake X-Ray (Michigan ?) might be able to help you out.
Electronics Forum | Thu Nov 07 15:06:11 EST 2013 | hegemon
1st X-Ray looks pretty good. One instance of what looks like solder migration in the lower left quadrant. 2nd X-Ray shows a number of locations where the solder has migrated into the vias, shown by the small dark circles between the main spheres.
Electronics Forum | Wed Feb 15 09:18:55 EST 2023 | tommy_magyar
Hello everyone, there is a recent article published, which states: "X-ray component counters do not damage the components being counted, making them ideal for counting sensitive or expensive components". A couple of years ago I heard a story from a c
Electronics Forum | Wed Nov 24 19:32:06 EST 2004 | Dreamsniper
Hi, Has anyone done this? X-ray a populated PCB and found voids on chips and some IC solder joints? Is this kind of screening acceptable? I got a PCB with this problem and not ruling out paste, profile and contamination issues. Please Help as it see
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