Electronics Forum | Mon Feb 17 02:51:21 EST 2003 | Scott B
We have also had this problem. I have managed to get around this by selecting a teach video model and positioning the teach window to include half the pad on the left and half the pad on the right so that the center point is bang in the middle of the
Electronics Forum | Wed Apr 02 12:50:01 EST 2003 | rdr
Does anyone know of any standards that deal with the physical location of BGAs on a PCBA? I am looking for something that states to not put BGAs in the center Axis of assemblies for bow and twist reasons. We have always informed customers to locate
Electronics Forum | Mon Nov 17 08:01:44 EST 2003 | stefwitt
The format is X,Y Theta of the component center for all placement machines. Gerber data can be useless, unless you have the reference from pin 1 to the component center. Some machines offer a CAD convertion tool. I don't know any machine, which can
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 | Thu Apr 01 12:05:21 EST 2004 | babe
Heat guns scare me, hot air scares me too. Just the heck of it why not apply high temp paste to the center and eutectic 63/37 standard solder to the outside pads. The outside reflows first allowing proper seating of the component and with a proper pr
Electronics Forum | Wed Jun 02 15:29:47 EDT 2004 | pr
Make sure the board is stopping at the center of the worknest or you will waste lots of time (you'll get software limit errors when you try to find fids.). If it's not in the center, you need to go in and reteach from scratch (doesn't take too long).
Electronics Forum | Wed Dec 08 12:58:49 EST 2004 | clampron
If it were my money and I had your specifications to achive, I would go Mydata. One platform, chip shooter, optical centering, mechanical centering, electrical verification (that works)smart feeders that work, etc.... I have worked on several platfor
Electronics Forum | Fri Jun 10 12:05:54 EDT 2005 | jdumont
Hi all, we are just getting into using local fiducials for BGAs. My question is, in addition to having to be on the same diagonal (opposing corners) do the fiducials have to be the exact same distance from the center of the part? I always thought yes
Electronics Forum | Tue Jul 19 08:12:23 EDT 2005 | davef
We agree with Rob. It looks like either kiss is blowing the paste around. It could be: * Nozzle id too large. * Kiss is occuring after the head has moved from the component. 0408%20MS%2001.jpg - Paste is not missing on the bottom-center pads. It is
Electronics Forum | Tue Nov 01 13:57:18 EST 2005 | bobpan
2c belt driven.....'a little' less accurate (costs less) 4c ball screw......'a little' more accurate (costs more) vu4-vu6 upward camera for fine pitch.....cant remember but the differenc is the field of view for camera. part centering is quad-align
