Electronics Forum | Mon Feb 21 16:06:10 EST 2005 | MR
I agree w/ JB; the package height definition is crucial. I have had problems w/ this in the past, and found that a resistor height was being used as a universal passive height for the capacitor in question. Properly defining the height fixed the pro
Electronics Forum | Thu Sep 08 13:07:18 EDT 2016 | claudea2
Hello Bob, we changed the nozzle z parameter until we got limit errors and backed up 1 mil. There was a slight reduction in the limit errors on the pickup of the component but it is still a problem. With the mod code we adjust the soft z height to ab
Electronics Forum | Thu Jul 20 17:03:09 EDT 2000 | Darby
Ketan, If you are using a z-axis head, pay very careful attention to the pick up height so that you don't force the head into the component. Also pay very careful attention to the placement height, we set the component height to 0.05 to 0.1mm over th
Electronics Forum | Wed May 25 13:02:57 EDT 2005 | jsloot
I have two Samsung machines running about 500 hours a month each. Placement rate is on the average 12,000 CPH between the two. The life expectancy of the nozzles used on 1206 packages seems rather short to me. It was about 2 months ago I replaced the
Electronics Forum | Fri Apr 04 05:02:08 EST 2003 | alexyalung
Hi All, The best solution we made on our tombstone defects is component Z dimension set at pick and place machine. Usually for 0402 components Z height is pre-set by the machine at 0.5 mm, by reducing it to 0.35mm we have solve our tombstone problem
Electronics Forum | Tue Apr 05 12:01:17 EDT 2005 | blueflag
Thanks for reply we have found a blown fuse on the back plane for the mot-z pcb . But we now have problems with Z height, i am trying to auto-teach devices from the tray wagon (qfp etc) and it is not always lowering the nozzle to the component. i ha
Electronics Forum | Tue Apr 05 12:45:01 EDT 2005 | cyber_wolf
Make sure your matrix tray is up high enough. The components in the matrix tray should be at least at board level. Also check your component height in the package list. If all that is OK then, check those Z locks I spoke of earlier.
Electronics Forum | Fri May 08 17:55:37 EDT 2020 | cyber_wolf
The squish is determined by the spring in the nozzle. If Z0 or table level is out, you would see it on more than one component..most likely Make sure board thickness and component height are correct. Also make sure you have board support installe
Electronics Forum | Thu Mar 03 11:10:20 EST 2005 | Dougs
I'm telling you i've bought the nozzles wound the wrong way and it helped, no more probs with nozzles sticking, i'd tried buying fuji nozzles, checked all my component heights, set Z0 properly, checked shaft heights, set up st1, etc etc but the new s
Electronics Forum | Thu Dec 08 11:50:40 EST 2005 | Stefan
If you mention mis-alignment and missing component in the same sentance, I suspect the component is not properly released after placement. Assuming the Juki machines use an air blow, after vacuum shut off, than I would look at a correct air flow firs
