Electronics Forum | Mon Mar 12 10:29:07 EDT 2007 | george
Are you using wave solder pallets? I use same flux and solder as you do. I've seen this problem when some walls in the wave fixture cause a "shadowing effect"...if you enlarge those openings you will increase the dwell time eliminatting voids (if the
Electronics Forum | Mon Dec 24 19:12:06 EST 2007 | adamben10
I'm shadowing an old posting posted by Odor back in March 2002. Any Expert out there, if you have good answer to the below questions, please dive in...Thanks in advance. 1) Does anybody have done the profiling board life time experiment? 2) The prof
Electronics Forum | Mon Jun 09 17:39:06 EDT 2008 | jlawson
Shadow cure effects are dealt with by post cure mechanisims. New UV Coatings should have one, either heat or moisture cure. Basically UV primary cure starts off cure process, allows handling of the products. But UV is not suitable for all products
Electronics Forum | Fri Oct 30 12:48:59 EDT 2009 | dannou
I've been the AOI programmer for around 5 years now. The equipment I use is the Orbotech VT-9300 & VT-9500 systems. The programming isn't too difficult, mostly Grey-scale shadow measurement through application algorithms. Three levels of lighting an
Electronics Forum | Thu Dec 10 15:33:55 EST 2009 | duso02
We use one quite often. Our machine is a Uvitron Conveyor 40 as we are a large coating house and this allows us to process many boards. Dymax also maufactures and sells machines as well. Humiseal and Dymax both manufacture UV coatings. Emerson Cuming
Electronics Forum | Mon Nov 14 01:46:12 EST 2011 | julien
We already have contact with Zestron and we try several chemicals and process (Immersion, aspersion, vapor degreasing). And we always find something under low standoff component. Concerning the flow pressure and shadowing, we try different position
Electronics Forum | Wed Jan 31 14:36:18 EST 2018 | prdmm1
what is the best type of fiducial to use when making a PCB? currently the engineer at my job is using a square fiducial on the track layer and it is covered in masking. the camera doesnt pick it up correctly due to the shadow around it. and usually a
Electronics Forum | Mon Jun 18 15:42:32 EDT 2001 | Gil Zweig
Transmission x-ray inspection is the technique most people are familiar with. Since materials will absorb or transmit x-rays as a function of their atomic number and thickness, the transmission x-ray image provides a two dimensional represenation of
Electronics Forum | Mon Sep 22 17:02:58 EDT 2008 | hegemon
You are on the right track Ismir. Essentially however, as the programmer of the machine, I am the one that creates the PCB with the errors to benchmark the settings for the machine. No secret lab though! :-) Easy enough for most any AOI machine to
Electronics Forum | Tue Nov 28 13:26:59 EST 2000 | Graham Naisbitt
Terry Sorry, I just re-read your question and failed to answer all your questions: Shadowing only applies to coatings that are UV curable. Neither of these are UV curable. You do not want this technology for 3 dimensional assemblies, it is too expe
