Electronics Forum | Thu Oct 28 00:01:55 EDT 2010 | emmanueldavid
XPS, Hope the information in the above thread may help to get You right. BTW, Local Fiducial Marks are meant for specific devices in the Circuit Cards & typically selected to overcome offset or precision placement issues faced from Global Fiducial
Electronics Forum | Wed Oct 20 11:39:01 EDT 2010 | mikesewell
On our Fuji NXT and AIM machines I never program local fids...we place down to 16 mil fine pitch and BGA, uBGA, multirow QFNs with no placement issues. Most boards are panelized in an array and we have corner fids added to the rails. Regards, Mi
Electronics Forum | Thu Oct 21 10:48:05 EDT 2010 | wrongway
depends on the machine the old amistar machines I used local fids they were needed we got new universal machines now it does'nt seem to need them we place down to 16 mil pitch and small bga with no problems at all using global fids
Electronics Forum | Wed Oct 20 19:02:30 EDT 2010 | swag
We've done many fine pitch parts using only global board fids with good results. However, if you're working with flex or flex/rigid designs, I would never use global or panel fids for fome pitch placement. We always request addition of local fids u
Electronics Forum | Mon Dec 14 15:08:46 EST 1998 | Jim Mitchell
Provided your software supports board stretch and the board is stretched in a linear fashion, you should not need fiducials for each image. If you do elect to use local fiducials, Quad recommends a single fiducial. This method is faster and you can
Electronics Forum | Mon Oct 25 05:52:34 EDT 2010 | sachu_70
In csae you use 2 fiducial recognition, ensure that board fiducials are oriented across a diagonal and spaced far apart. Also, maintain a prefered dia between 1-2 mm for the fiducial on board to have have a better correction factor recorded during fi
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 | Tue Dec 15 15:45:50 EST 1998 | Chrys
| Okay here is the deal. I am fairly new to the company here, but one thing I have noticed is that we read way to many fiducials, in my opinon anyway. One for example is this. One assembly was reading 17 fids. Smallest pitch was .25mil I say you
Electronics Forum | Tue Mar 27 10:18:33 EDT 2018 | dleeper
Two Fiducials are sufficient for alignment. A third fiducial is useful to make sure the board isn't loaded backward. This assumes there's not a fourth fid on the opposite corner of the third. More than three fids just wastes time on a printer since
Electronics Forum | Mon Jun 13 15:19:11 EDT 2005 | Stefan
I guess, since nobody is using local fiducials anymore, we forgot how to program the fiducials. Was it in the component-package file or in the placement file? Nevertheless, once you find the place, where you enter the fiducial position, you'll find t
