Electronics Forum | Thu Oct 28 13:36:14 EDT 1999 | Bart Smith
I am a design engineer and have a circuit board design with a 292 pin BGA on it. The board manufacturer is experiencing a failure rate of about 2.8% on the BGA device due to soldering problems. This is my first experience with BGA. How does the 2.
Electronics Forum | Wed Feb 17 13:02:03 EST 2016 | comatose
The layer count itself isn't going to be what drives yields. What is the trace/space? How much annular ring for vias did you give them to play with? Class 2 or class 3? What's the worst hole aspect ratio? Controlled impedance? The closer you run to y
Electronics Forum | Fri Oct 29 05:23:00 EDT 1999 | Wolfgang Busko
Hi Bart, that�s much to high. If that would happen to me my boss would tear my head off. For improving the yields you must find the cause for the soldering problems. What are the symptoms? What could be the cause for the symptoms? Could be design pr
Electronics Forum | Fri Oct 22 04:09:22 EDT 2004 | christina
Is there anyone who knows the yield rate difference for SMT on multi-flex boards and rig-flex boards ? Basically, I think the yield rate should be higher for rig-flex than multi-flex due to the poor dimensional stability of polyimide, since multi-fle
Electronics Forum | Mon Jul 05 02:32:14 EDT 1999 | Vinesh Gandhi
Dear All, We are a medium sized Electronic manufacturing company manufacturing computer motherboards and Telecommunication products. We have a big debate going on within our company regarding the defect rate measurement technique. At present we
Electronics Forum | Mon May 07 18:30:23 EDT 2001 | genny
If a PCB is already going through ICT and some additional inspection method is desired to increase first pass test yield rates, what are the advantages/disadvantages of AOI vs XRay? The most common problems seen are missing or skewed components and
Electronics Forum | Mon Jun 18 16:13:47 EDT 2001 | calipso
If a PCB is already going through ICT and some additional inspection method is desired to increase first pass test yield rates, what are the advantages/disadvantages of AOI vs XRay? The most common problems seen are missing or skewed components and i
Electronics Forum | Tue Jul 03 09:13:18 EDT 2001 | rstodd
I work for a memory module manufacturer and I am interested in obtaining information on typical first-pass yield numbers and failure rates in the memory module industry for benchmarking purposes. Any information provided would be greatly appreciated
Electronics Forum | Wed Apr 28 17:41:44 EDT 2004 | longpham246
Hello! We placed quite a few of 0402 with our CP3 using 0.7mm nozzle with the same feeder as you had. Pick up can be adjust and calibrated, but that is not the problem, I agreed with you on that part. The trick is you have adjust and play around wi
Electronics Forum | Tue Mar 17 07:35:37 EDT 2009 | nagesh
We have the IC placer Fuji-IP3 machine.Can this machine be able to place MicroBGA / BGA with good vision system.My card has almost 8 BGA with 4 MicroBGA?Still now i had placed 1 or 2 BGA(Placement by body centering).In this machine the Y- table keeps
