Electronics Forum | Thu Aug 08 22:35:49 EDT 2019 | sssamw
What is the skewed part ? How you exclude other causes?
Electronics Forum | Thu Jan 11 19:52:55 EST 2024 | travishemen
Check the top of the placing head. There are 3 screws around a piece that pops up when you push up on the nozzle. I had one once that was vibrating and causing the part to place slightly off angle. It is exposed to the vacuum used to pick the part
Electronics Forum | Tue Jan 05 10:17:25 EST 1999 | Earl Moon
| | | Does anyone have any experience with vibration testing of BGA packages and assemblies? We are starting to design BGA's into some of our products and we have not found very much information on vibrational test results. Any information will be
Electronics Forum | Thu Mar 24 17:36:31 EST 2005 | Grant
Hi, Yes MYDATA vibration feeders are a nightmare, but you might want to check the feeder. We had one that would vary a lot, and it never seemed to be able to be set to the right vibration level for consistent feeding. It turned out to have a problem
Electronics Forum | Thu May 23 03:10:43 EDT 2002 | ianchan
Hi mates, need your advise here. we have solderballs on a model due to neglect by stubborn folks to follow issued process control instructions. the post-reflow PCBA has solderballs stuck in the NC flux residue and is not in compliance to IPC-A-610
Electronics Forum | Thu Mar 02 13:13:14 EST 2006 | Chunks
A ballast is the device needed to energize fluorescent lamps during operation. In all fluorescent lighting systems, the ballast provides the proper voltage to start the lamp and then regulates the electric current flowing through the lamp to stabiliz
Electronics Forum | Tue Oct 17 03:13:10 EDT 2006 | charless
Apoligies Steve if I did not explain myself clearly. We have made the same design using the same RoHs compliant components (which I am assured by the suppliers are process temperature capable) with both lead and lead free solder. Without wishing to
Electronics Forum | Tue Jan 24 21:15:07 EST 2017 | david_chiu
I have met the same issue before. 1st possible root cause: The dimensions of reel's each chip inserting hole are a little bigger. You need to see if the turn over issue are all happened in the same vendor's reel material. 2nd possible root cause: The
Electronics Forum | Mon Sep 14 21:40:25 EDT 1998 | Stefan W.
Unfortunatly there are too many variables to play with that you can't make a general rule for the vibration time. However, I suggest you increase the vibration time and lower the vibration force ( AC voltage ). For an SO 8, I would use 600 ms for an
Electronics Forum | Tue Sep 15 14:12:36 EDT 1998 | Justin Medernach
| Unfortunatly there are too many variables to play with that you can't make a general rule for the vibration time. | However, I suggest you increase the vibration time and lower the vibration force ( AC voltage ). For an SO 8, I would use 600 ms for
