Electronics Forum | Wed Apr 15 17:16:00 EDT 2009 | rmitchell
Hi, I am trying to reduce some 0402 cap tombstones. The main cause is the pad spacing is a little too far apart and the parts are as tall as they are wide .5mm I am stuck with the pad spacing for a while. All other parts are soldering well, even 0
Electronics Forum | Thu Apr 16 09:31:28 EDT 2009 | padawanlinuxero
Hi all! I have a problem, I have a wave solder a Econopak plus by Electrovert, and someone move something when I was not here, now when I try to load a recipe a very specific recipe is givening me a error message : MyrecipeName Isam error 30000: Da
Electronics Forum | Mon Apr 20 14:59:14 EDT 2009 | c111
We are in a position where we have to purchase Leadfree BGA's and have them re-balled as leaded. I'm looking for some data from anyone who has done large volume outsource. 1) What percent fallout should I expcet from the re-balling process. 2) After
Electronics Forum | Wed Apr 22 07:54:18 EDT 2009 | clampron
Cood Morning, We have a similar situation. We have had a large volume (5K) of RoHS BGA's reballed with 63/37. We have had only a few failures most of which do not appear to be related to that particular BGA. Potential BGA failures are running under
Electronics Forum | Thu Apr 30 14:41:46 EDT 2009 | bandjwet
There was a paper recently presented by R Cirimele at the CALCE Reliability symposium in which extensive testing was done on a part (thermal stress, vibration, shock) after numerous reballing cycles. This show no failures on the reballed parts. In t
Electronics Forum | Mon Apr 27 19:31:12 EDT 2009 | stevek
Remember that the 25% is a reduction in cross sectional area. A void in the middle of the ball that reduces the cross sectional area by 25% is about half the diameter of the ball. If it is closer to either termination, the corresponding size would
Electronics Forum | Fri Apr 24 07:27:28 EDT 2009 | jdengler
Hi Nick, I took a feeder that was broken and modified it. I glued shims in place to set the sensor height with. I glued a block of metal to work as a stop for the Y axis. Then for the rotation I use a piece of paper to see were the emitter is poi
Electronics Forum | Sat Apr 25 02:46:18 EDT 2009 | smellew
FYI SME offers a replacement Tape leaf detection system which covers the whole range of FUJI CP4-CP7 machines.its also very reasonably priced. It doesn't use Fibre Sensors or mirrors. it only has 1 adjustment which is height via Eccentric screw. even
Electronics Forum | Thu Apr 30 02:39:48 EDT 2009 | michafogel
Thanks for the info so far, but still need a number or a formula to calculate. The site you have point me to can support in a way, but if I want to release a design procedure to our editors, a number will be very helpful. One more issue is what can b
Electronics Forum | Thu Apr 30 05:54:41 EDT 2009 | davepick
Michael, There are so many factors involved that mean a definitive number is extremely difficult - if not possible. I recommend you speak with Tony Wilson. He has been in the industry for over 25 years and reccently done PhD work on modeling failure
