Electronics Forum | Tue Sep 14 07:54:05 EDT 2004 | modwyer
Folks, At the moment I bake all BGA that are in unsealed trays, to reduce moisture etc. Is this common practice or are there particular manufacturuers that cause more problems. Also, the tape for BGA tape & reel has a hole in the tape (as is normal
Electronics Forum | Thu Sep 16 21:11:10 EDT 2004 | davef
Left to its own devices the plastic used to seal your parts will take-on moisture in the air. When you heat there parts the water in the part expands and can damage the part, if not properly demoisturized. The instustry standards for controlling su
Electronics Forum | Wed Nov 03 09:42:31 EST 2004 | dramos1
Hi Simon, Thanks for the immediate reply. We really appreciate it very much. Currently, we are using Class 2 for the visual inspection criteria of our telecom boards. In IPC-A-610 Rev. C criteria, there are TARGET, ACCEPTABLE and REJECT criterias.
Electronics Forum | Wed Dec 15 15:24:22 EST 2004 | russ
I think they need to go after the real lead contaminants. PCB/electronic waste accounts for .01% of lead waste based upon my last info I rec'd. So this lead free agenda is really going to help alot isn't it. I believe that most of the lead contami
Electronics Forum | Mon Jan 17 14:03:45 EST 2005 | davef
There's a fair amount of information on underfilling CSP and flip chip in the web. Look here to get started: * http://www.asymtek.com/news/articles/2002_globaltronics_csp_and_fcuf.pdf * http://www.smta.org/knowledge/proceedings_abstract.cfm?PROC_ID
Electronics Forum | Tue Jul 19 06:33:56 EDT 2005 | Rob
Hi GS, Thanks for responding - looks like we already put end termination coating on the label - we just call it "second level interconnect" There is a specimen label at: http://www.anglia.com/quality/labels.pdf Regarding standardising labels accr
Electronics Forum | Tue Aug 30 12:08:09 EDT 2005 | slthomas
The answer for us at my previous employer was water soluble flux. Wash the board, no residue. If you're not set up to wash (needing a washer, DI water source, waste treatment, ventilation, etc.) it can be expensive and space consuming. Do some resea
Electronics Forum | Sun Sep 04 01:59:41 EDT 2005 | smartasp
We need to dry and clean the air in our dedicated poting and conformal coating room. Can anybody help on how to go about it. The airconditions only recycle and dry until room temperature is reached and therefore have great fluctuations and unstable p
Electronics Forum | Tue Sep 06 09:59:32 EDT 2005 | slthomas
Find out if you can separate the dehumidifier controls from the heating/cooling controls, without adding an air handler. Otherwise I think you'd need to add a dehumidifier that runs independantly. Don't forget that system capacity has to be rated fo
Electronics Forum | Wed Oct 12 07:47:42 EDT 2005 | Comp tech.
Sean, I just installed a whole new comp room in our facility. 1, By kick off do you mean the comp goes into an idle mode,or shut down completely? If it just goes into an idle mode, this may be caused by your supply manifold being to small in diameter
