Electronics Forum | Mon Mar 19 05:51:24 EDT 2007 | pima
Hello I made some test on different oven and problem still occurs. The only progress is that with diffrent thermoprofil ( Ramp to Spike instead of Ramp- Soak- Spike skewed components appears at 1 % of produced parts). With Ramp - Soak-Spike we have p
Electronics Forum | Tue Jan 05 13:26:13 EST 2021 | ppcbs
We are working to upgrade our BGA Rework Systems to place BGA's up to 150mm in size. We are encountering an issue that I wanted to pose to this group. When we get above 50mm in chip size, which is the field of view for the vision systems Prism, the
Electronics Forum | Wed Apr 25 07:57:36 EDT 2001 | wbu
Steve: Try to find something that�s common to all your skewed parts. We haven�t had much trouble with it except for some MELF diodes a couple of years ago which didn�t look well aligned but made no trouble with specs. Better suited pad design solved
Electronics Forum | Thu Aug 12 14:55:08 EDT 2004 | johnw
Hi guys I havnt been on for a while so its nice to be back been working in europe mostly Fuji CP6 skewing rnets Marcels comment is the closest rnets are a problem as said before the main areas are 1 A good assmbley shape is a must with 30% defaul
Electronics Forum | Tue Sep 20 12:38:05 EDT 2005 | Mark
Hallo, I have a problem with Topaz Xi with FNC nozzles. We have front, back and single camera in Topaz Xi. When i am using front camera and placing SO8, TSSOP14, TSSOP16 etc, using nozzles 73F the accurancy is ok. But when i switch to the back cam
Electronics Forum | Thu Mar 08 15:21:43 EST 2007 | pima
To be honest this product its only a part of bigger PCB, so we have only substrate with 3 FETs on it so no other components at substrate occurs and all substrate are staying at metal fixture. WE have already window pan aperture. WE producing this pro
Electronics Forum | Thu Jun 22 11:42:29 EDT 2000 | Chrys Shea
Sal, Silly question: Were the parts skewed before they went into the oven? I've chased down a few similar reflow problems in my lifetime, only to find out it was a pick and place problem. Wrong nozzle size, bad nozzle, feeder not advancing all
Electronics Forum | Fri Jun 08 13:29:14 EDT 2001 | dougt
Local fiducials will help component placement but will have no effect on part recognition. Local fiducials help you compensate for board skew or streatch by looking at a small area of the board vs. the board fiducials that cover placement over the e
Electronics Forum | Sat Jul 07 04:30:23 EDT 2001 | johnw
Dave this seems to be happining at placement altough when u run cal board the palcement is fine could the glue density be causing this
Electronics Forum | Fri Apr 18 08:24:49 EDT 2003 | tsongshe
Hello,all.these days I met many skewed transistors after reflow soldering.we 've tried many ways attemting solving it thoroughly...changing the aperture pattern,solder volume and even changing the size of pcb pad,but the results are not very good.eve
