Electronics Forum: fiducial mark best fit (Page 1 of 3)

Wire Bonding fiducial mark specifications

Electronics Forum | Wed Jan 31 17:30:54 EST 2007 | GS

Thanks a lot flipit, I am not directly involved in this "problem" but is my friend that have his CM rejecting PCBs because it says the "+" mark (spokes lengths) are out of tolerances. It seams CM bonder's require tolerance +/- 0,05(? not sure). I d

How many Fiducials on PCB for best placement

Electronics Forum | Fri Dec 02 16:26:00 EST 2011 | davef

Here's some recommendations from various companies: * http://www.sibex.com/pcbguidelines.pdf * http://www.carltonindustriesonline.com/Docs/Fiducial.doc * http://www.tracktronics.com.au/pdf/PicknPlace_Fiducials.pdf * http://microtronix.co.za/pcb_re

How many Fiducials on PCB for best placement

Electronics Forum | Fri Nov 25 15:52:40 EST 2011 | davef

"IPC-2221 - Generic Standard On Printed Board Design" talks to fiducials. Anther take on fiducials says they shall meet the following requirements. * Make fiducials 1 - 1.5 mm diameter circle. * Cover fiducials with tin. * Keep solder mask opening at

Re: Fiducials

Electronics Forum | Mon Feb 22 05:39:58 EST 1999 | Scott Davies

We are currently using circle, cross and double-cross(#) fiducial patterns with SiPlace equipment. Most of the problems seem to occur when, in the case of a HASL fiducial mark, a PCB is topside reflowed, goes away for thru-hole and comes back for bot

Re: fiducials

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

Re: Fiducial Capture MV2F/CP-4-3

Electronics Forum | Tue Aug 25 12:50:24 EDT 1998 | Lance Smalley

To see if the MV will recognize the marks, in the binary mode, when setting threshold (binary level), raise up the level until the edge of the mark starts to degrade. Write down the number. Lower the level until the fiducial starts to "bloom". Wri

Stencil Fiducial Repair

Electronics Forum | Mon Jul 13 07:25:09 EDT 2009 | hcarrasco

Hi everybody, > We recently start to use an ultrasonic stencil cleaners for our stencils. > It' work well, but after some time, we saw a lot of fiducial that the black > epoxy have been partially or totaly remove. I want to know if someone h

Fiducial replacements?

Electronics Forum | Fri Nov 30 18:22:40 EST 2007 | mika

Hi Paul M, There are no silly questions but silly answers.. and here is maybe a few if I understand you correctly: If you consider place anything less than a 1.27mm (50mil) pitch component down or a chip less than a 1210, hey it maybe don't even work


Electronics Forum | Fri Jul 09 18:36:48 EDT 2010 | rway

We don't use flex pcbs but have the same issue here. Most of our pcbs are HASL finish. I have looked at silver and gold immersion and both look really good under my color camera on my AOI. However, gold is more pricey. There is no additional cost

Yamaha/Philips Model Number Cross References

Electronics Forum | Mon Nov 27 18:50:48 EST 2006 | darby

G'day Marina, Only YM/CSM seies feeders will fit these machines. Feeders were generally prefixed as Y8, Y12 = mechanical advance 8mm, 12mm. There may be some Y16 in existence but I doubt it. HA12, HA16 = air activated 12mm, 16mm. The HA12 could take

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