Electronics Forum | Mon Jul 20 17:40:48 EDT 1998 | socheat khun
| Does anyone know why this typically occurs. We have seen capacitors crack due to stressing. Any good solutions? | Regards, | | Steve. Hi steve! Did you check component date-code, reflow profile and component placement height. it has happen to me
Electronics Forum | Thu Mar 04 17:32:23 EST 1999 | SMTASSY
| Mario: Interesting analysis. What does "Hand placement versus wrong component should only ave. 20-30 ppm." mean? Is that a subset of errors? Thanks. Dave F | What I mean Dave is that if you have a good (well actualy a great set-up) with all t
Electronics Forum | Thu May 29 07:06:36 EDT 2003 | stefwitt
Phil, as a rule of thumb, measuring machines (such as Zeiss, View and others) should be ten times more accurate, than the placement machine, in order to provide measuring values (CPK). AOI are meant to detect missing and wrong components, but not mea
Electronics Forum | Mon Jul 24 03:02:35 EDT 2006 | emeto
CKH, if I understand you correct, only some components(for example 2 from 10 parts in one reel) goes wrong. there is one more. How your machine alignes the components? Vision, laser or mechanicly. The problem can come from there. If the recognition
Electronics Forum | Fri Jun 08 18:27:03 EDT 2007 | jmelson
This is probably an inner plated layer of the component that did not bond well. It may be a component that either has the wrong surface finish for lead-free or can't handle the temperatures. Many times I have seen a similar-looking layer when the l
Electronics Forum | Fri Jan 11 10:56:34 EST 2008 | kmorris
We all know that Engineers are human and consequently may make errors when creating pick and place programs. (e.g. program a wrong part number for a given reference designator) Usually that is easy to detect since the wrong component is a differnt p
Electronics Forum | Thu Mar 29 16:34:18 EST 2001 | larryk
Genny, Would you use the X-Ray in addition to AOI? Or would it be in place of? If so, would it pick out wrong value components? Polarity? I never thought of it as a replacement. Seems like you have investigated into this. Do you mind sharing your fin
Electronics Forum | Thu Jun 01 05:05:30 EDT 2006 | jacksaria
Hello EC, We already done your suggestion but still no effect. Feeders already calibrated. Do have additional inputs for this? Also is the barcode eliminate 100% wrong value component? regards,
Electronics Forum | Thu Sep 29 05:37:56 EDT 2005 | dougs
for 0402's you should be able to run the turret at full speed, if you need to slow it down it means that your machine isn't set up properly. use the vision number that the manual tells you and make sure your feeders are properly calibrated, poorly c
Electronics Forum | Mon Jun 26 10:55:34 EDT 2006 | cyber_wolf
Do you have a login for the support section on the Mydata website ? If not, get one. Click on MYtech, then click the article named: "Simple feeder care reduces reject rate! The component separator spring" We run alot of 0402's on the TM8FC mags wit
