Electronics Forum | Mon Nov 09 07:21:02 EST 2009 | CL
Good Morning, I have seen many posts regarding BGA voiding being excessive and what can be done to better the condition. I have a customer that has an assembly that we have had a diufficult time with. We have spent a lot of time debugging the proces
Electronics Forum | Fri Nov 13 08:27:43 EST 2009 | herman
Your customer is very unreasonable to demand void-free BGA SJs. Minor voiding is not a condition for rejection per IPC-A-610D, J-STD-001D, or even J-STD-001DS (Space addendum). Having said that, let me tell you that the voiding has little or nothing
Electronics Forum | Fri Apr 23 17:59:54 EDT 2010 | hegemon
Therein lies the issue. Unknown storage conditions before we received the PCBs, date codes just expired (2 weeks), first article is de-lam city! Had a bad feeling about it. Have read some studies showing that there is no linear tie in of visual cha
Electronics Forum | Tue Feb 08 14:56:09 EST 2011 | rkr76
Hello everyone, I have a question regarding wavesoldering and measuring if a proces/machine is in control. I made a custom carrier for measuring contact time, parallelism, solder temperature, coveyorspeed and some data of the preheat section. The s
Electronics Forum | Fri Feb 25 02:30:32 EST 2011 | pkannan
Dstadem, Thanks for bringing your in valuable experience with the J STD 005 " Requirements of Solder Paste". I fully agree with you that the Solder Paste can be qualified for shelf life by doing simple viscosity test and visual inspection for coal
Electronics Forum | Mon Feb 20 23:01:05 EST 2012 | davef
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Electronics Forum | Mon Aug 27 08:57:39 EDT 2012 | cobham1
We are not a contract manufacturer we are in fact a OEM. our product is used for military systems. The reason no values are on the parts is because the orginal owner of the product did not want anyone to steal the values and make their own version of
Electronics Forum | Mon Aug 27 11:05:17 EDT 2012 | rgduval
Getting through the empires is always fun. And, re-qualification testing with your customer (military or not) is also fun, and time-consuming. Add a union shop on top of that, and I truly feel your pain! ICT will solve your immediate problem, as h
Electronics Forum | Wed May 22 19:10:47 EDT 2013 | anvil1021
We do a lot of these devices and I guess I am not familiar the term "Dry Solder". The QFN device is not designed to have a drain hole, but needs to have thermal vias to control heat in most cases. We have used every possible gnd pad design and modifi
Electronics Forum | Fri Jun 14 12:00:10 EDT 2013 | rgduval
Is this a new assembly/new test fixture/program? Or is this an existing assembly that is suddenly exhibiting this failure? Capacitors measured in circuit will not necessarily measure their correct values. Active components in circuit will be affec
