Electronics Forum | Sun Jan 20 17:55:49 EST 2013 | ngineer
Mikej, I'm only running a single image, just want to correct for the slight variations in how the board seats in the transport. It's not more than a few mils off, but enough to cause an issue on fine pitch parts. I don't have any image fiducial
Electronics Forum | Fri Aug 19 05:07:00 EDT 2011 | robertwillis
Its not a problem to do you just modify the procedure slightly for the smaller thinner parts. There some images and on my CD ROM and posters see http://www.packageonpackage.co.uk website I will also be doing a workshop at APEX and there is a webinar
Electronics Forum | Tue Jun 07 08:31:57 EDT 2011 | bootstrap
I am building a rugged digital video camera product that essentially is just a sandwitch of 3 parts: #1: front piece is machined aluminum with C-mount thread #2: middle piece is 1/16" printed circuit board #3: back piece is machined aluminum The
Electronics Forum | Wed May 23 15:58:01 EDT 2018 | mcurtin2011
Those patterns are either: a) the stencil has recieved some streching stress - either being pushed on and dented by some obstruction, or b) has been worn thin and therefore streched as a result. This type of change to your foil may cause a slight sh
Electronics Forum | Fri Apr 21 18:43:23 EDT 2006 | SD
Sorry, I have not read the article. However, I do have five years experience constantly tweaking an AOI system that ran ONE product! The strength of the machine was solder inspection. The biggest problem was component color variation and shadowing
Electronics Forum | Mon Jul 14 11:59:41 EDT 2014 | rgduval
I've primarily used MyData equipment, personally, and, optically centered devices definitely take longer than mechanically centered parts on a MyData, owing to the construction of the machine. With a fixed upward looking camera, the head has to pick
Electronics Forum | Thu Mar 26 21:03:24 EDT 2009 | bigdaddysoy9
I have noticed this on some of our large multi-circuit panels. It's such a slight rise in our false call rate that I haven't really explored it. I'm just guessing that it has something to do with the fiducials calculating the twist/shrink of the boar
Electronics Forum | Thu Mar 06 11:48:09 EST 2008 | muse95
Black pad with IAg??? Tarnish is NOT black pad. Tarnish is usually just some silver sulfide on the surface and can also usually be soldered through, by using a little additional, or slightly more agressive, flux, and still make a good quality solder
Electronics Forum | Wed Aug 17 13:57:27 EDT 2005 | ppwlee
We have encountered what appears to be mask discoloration after wave soldering. The areas of concern coincide with the areas that were exposed selectively by fixtures during wave soldering, dominated by one date code of PCB with a slightly different
Electronics Forum | Thu Jun 22 10:23:14 EDT 2006 | cuculi54986@yahoo.com
I'm no AOI expert by any means, however I spent a few minutes one time about 4 years ago working on an old CR Technology (or is it CR Technologies?) machine so I've been chosen by my company to be the "technical guy" for our AOI evaluation. We are l
