Electronics Forum | Fri Aug 08 11:39:33 EDT 2008 | ethancw1sel
Thanks for your input. I too thought the pogo pins would be the main issue. But we've been running with ours for about 6 months, and we've not replaced one pogo pin block. But we've replaced 4 or 5 various sensors. The PSV and Tension sensors are
Electronics Forum | Mon Aug 11 10:38:06 EDT 2008 | thaqalain
Well first 6 out of 180 were right and acceptable RTI result was supplied too late, I was busy on inspection and the technician was out of RTI station. I have deatiled data sheet (17 pages) with all facts and figures, will I forward it to you?
Electronics Forum | Sun Aug 10 21:21:52 EDT 2008 | proy
I am told that an older LCS (mid/late 90's) is NOT compatible with a new OPAL, can anyone confirm this or discuss that they were able to use an old LCS on a new machine? Thanks Peter
Electronics Forum | Tue Aug 12 13:22:17 EDT 2008 | bschreiber
A copy of the IPC-7526 "Stencil and Misprint Cleaning Handbook" is available as a free download at: http://www.smartsonic.com/article.html Regards, Bill Schreiber Smart Sonic Stencil Cleaning Systems www.SmartSonic.com
Electronics Forum | Mon Aug 18 17:20:16 EDT 2008 | jlawson
Try Avantec Topklean EL-60, can clean off solder paste or uncured glue, is hydrocarbon based cleaner - but with high flash point. Will evapourate faster than water based solutions, not as fast as IPA , but does much better job.
Electronics Forum | Mon Aug 11 10:37:19 EDT 2008 | realchunks
I assume you mean the balls of the BGA, not pads (laugh it up guys - I said balls). If so, you may have a no-lead BGA or a high temp BGA.
Electronics Forum | Mon Aug 11 11:00:40 EDT 2008 | eyalg
RoHS BGA. No lead in it. > RoHS BGA. No lead in it. ok. this is not the case .It was sn/pb type...
Electronics Forum | Mon Aug 11 13:55:09 EDT 2008 | guhansub1
Your defect may be possibly due to black pads, although it is rare on component side. Is your BGA pad finish ENIG? If so, inspection using a SEM can give clues on the presence of black pads
Electronics Forum | Mon Aug 11 14:04:51 EDT 2008 | realchunks
Then your profile is way off. You need a t-couple mounted under the BGA on one of the center balls to measure correctly.
Electronics Forum | Tue Aug 12 09:17:22 EDT 2008 | bobpan
We used a photo-optic sensor powered off the conveyor after the oven that is tied to a relay that trips when a board is seen at the sensor which causes a buzzer to go off. Very simple to make. Good luck.
