Electronics Forum | Thu Feb 08 08:54:56 EST 2007 | jhaviland
groundplane not heating properly.. Is it a J leaded IC? sometimes these get bent slightly in the packaging and sit just far enough off the board to cause solder problems.
Electronics Forum | Mon Apr 14 10:50:43 EDT 2003 | emeto
Pete I'm not very informed about it but from the things I red today - 2D inspection : solder component solder joints x-ray and what ever type exsist.
Electronics Forum | Tue Apr 15 08:38:23 EDT 2003 | pjc
Don't have any specific links to papers and articles. Try searching on the IPC.org (plus APEX show http://www.goapex.org) and SMTA.org web sites. Any papers and articles on the process from equipment mfg.'s should be taken with a grain of salt. Sold
Electronics Forum | Wed Apr 30 09:13:30 EDT 2003 | pjc
Yes, there is a limitation with Transmission X-ray on double-side SMT boards, ie.: back-to-back solder joints, components on bttom side over a solder joint.
Electronics Forum | Mon Apr 14 08:05:47 EDT 2003 | pjc
What 2D inspection? Solder Paste deposition perhaps? Transmission X-ray?
Electronics Forum | Wed Apr 30 08:00:33 EDT 2003 | pjc
Jason, In Transmission AXI the entire solder joint volume is imaged, not just a slice (no missing information) as with Cross-Section. Also, there is no signal loss from mechanical or digital image reconstruction (highest contrast and edge strength).
Electronics Forum | Tue Apr 29 12:18:01 EDT 2003 | jgregory
Pete, I have to disagree with your statement regarding 3D Xray not being a good source of determining solder volume. The Agilent 5DX is absolutely fantastic at determining volume. However, cost of the system makes it not very practical. Jason
Electronics Forum | Wed Jan 28 14:35:12 EST 2004 | swagner
Has anyone in the industry had even a fair amount of success inspecting reflowed solder joints to IPC class 3 standards? I am not interested in hearing from system reps or people who work for an AOI manufacturer. Thanks,
Electronics Forum | Mon Feb 02 12:36:41 EST 2004 | paul_bmc
90% of the assemblies our company produces are class 3 and we have no problem at all inspecting or getting class 3 quality through reflow. Rarely do we have touch up because of insufficient or poorly reflowed solder joints. What are the problems you
Electronics Forum | Mon Feb 02 17:52:11 EST 2004 | swagner
We are not having a problem, we have a customer that would like us to use post reflow AOI to inspect the solder joints to class three. I would like to see if anyone is having sucess doing this.
Our Company handle AOI (Auto Optical Inspection) and SPI (Solder Paste Inspection) Machines.
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