Electronics Forum | Fri Oct 19 18:30:05 EDT 2012 | hegemon
When using AOI for through hole you can expect to be able to detect, depending upon whether inspecting from the solder side or the destination side: Polarity (if applies) Value (if marked) Presence (should be there) Non-Presence (should NOT be there)
Electronics Forum | Tue Jan 23 14:26:12 EST 2007 | CL
Hello AR, Yes we are inspecting SMT that has been wave soldered. We are not inspecting solder on through hole components. We have actually found the solder inspector works better for wave solder SMT joints than reflowed. The system is great at ident
Electronics Forum | Wed Jun 11 09:58:35 EDT 2003 | swagner
Solder fillet inspection is something that I would avoid like SARS, solder joints are like a snowflake no two are the same, henceforth unrepeatability. The only time I would look into this would be for uBGA or flipchip on an audit basis utilizing X-
Electronics Forum | Tue Aug 20 15:36:31 EDT 2013 | sevenzero
http://www.flickr.com/photos/61443293@N03/9555358689 Compiled some screen grabs. The only example I had offline is a top inspection of a TH leg. Same idea. Picture 1: Add Solder Insp. Picture 2: Hist Perams. Adjust bottom slider until what you know
Electronics Forum | Thu Aug 10 07:29:43 EDT 2017 | stivais
How do you evaluate the soldering quality for those QFNs? X-Ray or AOI? For some QFNs (and other bottom termination components) it's not supposed to have solder fillets on toes. It's also noted in IPC-A-610 (Rev.F 8.3.13). Take a look at your QFN ch
Electronics Forum | Tue Aug 20 13:01:48 EDT 2013 | sevenzero
I read through this thread somewhat and checked out the pictures. I've programmed TH lead checks on a newer Yestech and an older Mirtec. I personally use the Yestech white-top/histogram check and the only solder inspection Mirtec has. In my experienc
Electronics Forum | Tue Feb 19 13:37:48 EST 2002 | PeteC
When evaluating AOI you must first define what type of inspections you want the system to perform, pre-solder or post-solder. What separates many mfgs. of these systems is how effective they are at finding post solder defects. This is where camera re
Electronics Forum | Wed Feb 20 18:04:56 EST 2013 | hegemon
You should have a number of lighting options to deal with the low contrast lettering. Low angle, B/W, reverse color. etc... If I am reading you right, you might have your bridge inspector too far out on the lead banks, that it is seeing the silkscree
Electronics Forum | Tue Jul 09 15:20:19 EDT 2002 | pjc
When you look at the capabilities of Combo machines they tend to sacrifice performance when compared to separate X-ray and AOI machines, meaning they don't do either the X-ray or AOI operations as well as a machine that was designed to do only one. A
Electronics Forum | Tue Feb 03 06:52:45 EST 2004 | paul_bmc
About 2 years ago our company tried to go with a post reflow AOI inspection. This AOI was suppose to be able to inspect to a level class 3 product. **It is impossible** You cannot inspect for a heel fillet and inspecting for poor wetting is a very
