Electronics Forum | Mon Mar 01 13:06:55 EST 2004 | Chris
Hi I have a question about fiducial mark. Can anyone explain me how it is work?. Do you have to during programming set exactly center of the mark? or approximate point the mark and the machine during placemnt will correct it. In some P&P i have met
Electronics Forum | Tue Mar 02 22:40:52 EST 2004 | pdeuel
To clean up other replys I will add that some most all machines have global correction. Most placements are an off sets from pcb 0,0 usually the lower left corner of the board. When the machine locates the fiduitals and these fids are not exactly whe
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 | Thu Jun 03 06:14:38 EDT 2021 | bukas
Yes, most of my fiducials are 1 mm. BUT, you may consider going 1.5mm or even better 2 mm because in my experience PCB manufacturers will NOT check fiducial shape during PCB testing. This goes for fiducials that are placed on panel frame. Fiducilas t
Electronics Forum | Wed Jun 02 20:15:03 EDT 2021 | jamesatqkits
Hello wonderful people. Does anyone know if I can get away with a 1mm fiducial on a Samsung CP45, I know the manual states the beam is .6mm and Fid's should be 2mm. Anyone have experience with this? Thanks, James in Canada have a great day everyone.
Electronics Forum | Tue Jan 30 17:58:49 EST 2007 | flipit
Hi, I would not be too concerned about what the shape of your wirebonding fiducial is. Cross, Square, Diamond, Circle, will all work well for you. I use a "+" and a diamond. Your machine magnification will be great, so don't make the fiducials to
Electronics Forum | Fri Nov 19 01:55:44 EST 2004 | Chics
Hi, Is anyone aware of the Mesh sizes(Screen Printing) that are against specific silver particle sizes. Like in case of solder for different types of paste, different mash sizes are recommended. Is anyone aware of any such things in the case of silve
Electronics Forum | Tue Nov 30 11:09:16 EST 2004 | fcox
Mesh opening size may be a factor in whether or not the paste will pass but only in very fine line deposition. Generally speaking, the printed line width and deposition thickness determine what mesh to use. The paste supplier will be able to tell you
Electronics Forum | Mon Nov 22 11:19:39 EST 2004 | davef
Short answer: Yes. Depending on the application of the conductive ink, suppliers select different mesh for the silver particles. So, you should follow your supplier's recommendations for printing, for instance: Conductive Ink||PI-2000 Highly Condu
Electronics Forum | Mon Mar 26 11:34:31 EDT 2007 | coop
as long as you are not getting recognition errors, and placements look good, go with it. as far as the pattern matching, the only thing I can think of is changing the it from circle or square to sp. shape and giving it the dimension sizes asked for.
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