Electronics Forum | Tue Mar 25 10:11:03 EDT 2008 | bandjwet
We recently sent some PCB assemblies along with the schematics to a test services provider. Afer paying for the NRE tooling charges we were paying $75.00 per hour for the service providers Level 1 test technicians. Does this sound like a fair rate (w
Electronics Forum | Tue Mar 25 17:37:59 EDT 2008 | hussman
If the component "fell off" sounds like double sided reflow - which is most likely a profile issue. If the parts just don't solder, could be many variables. I've had supervisors accuse ovens for bad profiles cuase they had missing parts. Too bad
Electronics Forum | Wed Mar 26 10:06:54 EDT 2008 | nibirta
hi folks, i have a question....does anyone knows a method for OSP measurements? well we have some troubles with a non-wetting process. we think that the copper is oxidiezed. There is a chemical test for "measuring" the osp when u count the seconds u
Electronics Forum | Thu Mar 27 08:05:20 EDT 2008 | davef
Search the SMTnet Archives for threads like: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=6753 where J Medernach says, "Make sure your supplier uses some sort of process control of coating thickness. If they don't have a photospectromete
Electronics Forum | Wed Apr 02 15:55:04 EDT 2008 | boardhouse
See if you can find someone with an XRF machine or talk to your Current Board house they probably have this equiptment if they run ENIG or Silver finishes. I would stop in with some boards your having issues with and have them measure the thickness.
Electronics Forum | Wed Mar 26 20:48:22 EDT 2008 | davef
Sealing clip, clamps used in semiconductor, hybrid packaging * Connor Manufacturing Services; 16233 N.E. Cameron Blvd., Portland, OR 97230; 503-256-0230 F503-256-0246 connorms.com * Electro Assembly Source; 602 Sciandro Dr, Greensburg PA 15601; 724-8
Electronics Forum | Fri Mar 28 01:45:10 EDT 2008 | En-Apple
I have problemabout fault reject rate at AOI very high, due to inspection letter or marking on IC body. It have uncleary. When I check at raw mat'l of IC it no problem but after pass reflow process it show marking not clear ( Laser marking type). Ple
Electronics Forum | Mon Mar 31 09:16:41 EDT 2008 | davef
What is changing the marking on the part? * Is flux residue coating the part to change the the way light reflects from the part surface? [Run a board with tape on the part, then remove the tape prior to AOI] * Is the heat of the oven changing the mar
Electronics Forum | Tue Apr 01 12:12:43 EDT 2008 | jdengler
On our machine we have found that some IC's require a different light for inspection based on the manufacturer. Have you tried other lighting options? You may need to talk to the AOI manufacturer to see if there is something the machine may be able
Electronics Forum | Wed Apr 02 13:56:03 EDT 2008 | slthomas
So your golden board isn't a valid representation of your production material. I don't use AOI but it sounds like either you need a vendor that can guarantee the same part marking appearance as you originally programmed to (not likely) or you need a
