Electronics Forum | Tue Dec 07 15:27:55 EST 1999 | John Thorup
Hello Vahid The most accurate fiducial for you depends somewhat on your board characteristics like contrast, spacing, inner layer features and obstructions. The more important consideration is what does the particular machine like best? The manufac
Electronics Forum | Thu Oct 20 05:56:56 EDT 2016 | fadzril
Basically, what is the main issue which requires you to use black fiducials? Stencil mark recognition issues? Solder printer machines have ability to adjust the brightness or contrast.
Electronics Forum | Wed Oct 20 08:40:48 EDT 2010 | xps
Hi everyone, here a question for the SMT production engineers... is possible today mount the fine pitch and ultrafine pitch devices (BGA, QFP, CSP), without using the local fiducials, but using the three standard fiducials of row card only? The corre
Electronics Forum | Thu Dec 09 14:10:42 EST 1999 | se
Fiducial recognition is based on finding the centroid of the gray scale density of the fiducial. Round fiducials are easier for the software to digest in most cases, but its more important what the camera sees. Gray scale or color contrast of the fi
Electronics Forum | Tue Dec 07 14:23:34 EST 1999 | JAX
Vahid, What type of error are you talking about? If you mean accuracy I would stick to round fiducials. As far as machines, the only question is about active component placement. For passive components Fuji(CP-series) is the way to go. O
Electronics Forum | Wed Jun 22 10:03:03 EDT 2005 | ??
use pads if you suspect thats what the problem is!!!!
Electronics Forum | Wed Oct 12 11:02:59 EDT 2016 | hken
I think stencil manufacturers back fill half etched fiducials with black epoxy or something. I know I've had some worn and that's what I've done for my vision systems to be happy again.
Electronics Forum | Tue May 18 15:42:39 EDT 2004 | davef
M.L. Feather I'm sorry I missed the first part of this discussion. Why are your fids black? Is this something you requested? Is it a board defect that you are trying to "work around"? What is the black material?
Electronics Forum | Wed Jun 22 09:19:45 EDT 2005 | geb
Don't have the manual (which is useful!) but suspect thats what the problem is. Anyone know where I could get a manual for an MPM Corporation AP-27 printer, can't find the company's website in Google.
Electronics Forum | Tue Jan 23 13:16:09 EST 2001 | CAL
Hoover-Davis makes excellent feeders. You may want to also try http://www.delawaretechnologies.com/prd_smtf.htm The person to speak with is Don Dawson 609-235-8454. Deleware Technologies makes feeders for most placement machines. Cal
.gif)
