Electronics Forum | Tue May 28 08:31:49 EDT 2002 | Hussman69
Hello, I know I will probably get a dozen "check the archives" answers, but what the heck. What is YOUR typical polarity mark for SMT devices? Do you use silk screen or cut a corner off a pad? Let me know and thanks.
Electronics Forum | Fri Sep 27 08:45:47 EDT 2002 | pr
Chevron marks are sets of lines (at right angles, on either side of component) placed on the board to help verify placement (we used it on BGA's) since you can't look at lead to pad to check placement accuracy. That's the only time I've seen it used.
Electronics Forum | Mon Dec 13 16:19:06 EST 2004 | saragorcos
Check out Envirosense - their cleaning chemistries are very enviro-friendly, and extremely effective - their website is http://www.envirosense-inc.com - if you contact them, see if you can reach Mark Palmer.
Electronics Forum | Thu Jun 15 16:24:19 EDT 2006 | patrickbruneel
I have to make a correction to my previous post There are specialized inks with cadmium pigment The easiest way to find out is to get an MSDS from your supplier and check for the presence of cadmium (which is a banned substance under the EU RoHS dir
Electronics Forum | Wed Jan 03 14:19:12 EST 2007 | muse
Have you checked out Alpha Wire Co. FIT-Print tubing? http://www.alphawire.com/pages/141.cfm I don't know if this is what you are looking for or not.
Electronics Forum | Tue Apr 29 12:31:15 EDT 2008 | johnmanley
We manufacture several water based ink removers. We have 1 type for solvent based inks and another for non solvent based inks. Check out our info and contacts atwaterworksllc.com
Electronics Forum | Wed May 25 19:04:39 EDT 2005 | russ
check your clamping rails and see if you see any little wear marks, we constantly hit these clamps during placement when the parts are too close to the edge. The height of that clamp is either 4 or 6mm I beleive and the noozles will hit them on occ
Electronics Forum | Fri Apr 02 09:50:40 EST 2004 | cedams
Yup. It was definitely checking the fiducials as well as the block skip marks and it used to work pretty well. What it did was started at the center of where the fiducial should be and scanned left. When it found a change in contrast it scanned righ
Electronics Forum | Fri Jan 11 10:56:34 EST 2008 | kmorris
We all know that Engineers are human and consequently may make errors when creating pick and place programs. (e.g. program a wrong part number for a given reference designator) Usually that is easy to detect since the wrong component is a differnt p
Electronics Forum | Wed Aug 27 12:15:15 EDT 2014 | jimmyboz
I understand what you want, I do not however, understand why? I have checked some documentation and found nothing. If I know why, I might try harder for a solution. It doesn't seem like time is crucial, else you want to pre-pick. Two easy ways ar
