Electronics Forum | Mon Jun 05 14:09:36 EDT 2000 | Jason
We would like to gauge or precentage of production line failures to industry standard AQL level. What would be an acceptale AQL level for assembled pcb's or finished units leaving the factory?
Electronics Forum | Wed Mar 19 08:38:13 EDT 2014 | davef
I can't picture much of what you're saying, not for nothing, I'm just not connecting. During assembly, solder mask can affected by heat and chemicals. Typically this would be during: * Soldering * Cleaning I will tell you this: Not to defend assem
Electronics Forum | Tue Mar 18 11:53:58 EDT 2014 | sara_pcb
Our contract manufacturing agency have procured pcbs from approved vendor. After assembly we found solder mask separated from the PCB on the epoxy area as patches. The top side is intact. also over the pcb tracks, the mask got damaged. In what c
Electronics Forum | Wed Jun 14 20:05:51 EDT 2000 | Raeto Zryd
Hi Jason, Zero defect is the only acceptable quality!! U need to ask yourself how capable is your process and how well is you quality system set up. No point in setting goals unatainable or beeing forced upon by management if the root problems of th
Electronics Forum | Fri Jan 20 13:25:07 EST 2006 | Gary Kemp
The mask/copper layer is exhibiting popcorn blistering following reflow. With profiling we know that the assembly does not see anything close to 250 C, rather around 238 C.
Electronics Forum | Thu Jan 19 21:43:33 EST 2006 | davef
Specifically, what element of the bare board is blistering? Tg of 140 could be acceptable. Search the fine SMTnet Archives for background on decomposition temperature [td]
Electronics Forum | Thu Jan 19 20:40:52 EST 2006 | Gary Kemp
We are experiencing a blistering problem during our process of lead free assembly. The customer has supplied us with the bare fab rated at 140 Tg. I am under the assumption that the Tg rating should at minimum be 170. Does anyone know if there is
Electronics Forum | Mon Dec 23 07:33:04 EST 2013 | aflex
It totally depends upon the configuration of both bare PCBs and assemble PCBs.
Electronics Forum | Mon Dec 23 00:22:58 EST 2013 | basheermd
One of our production plant is currently using your SEica Flying Probe Tester whose model and serial no. is furnished below. Model S22 MT Serial No. 200594. Now, they want to use it for both bare pcb and assemled pcb testing. Please furnish th
Electronics Forum | Wed Dec 25 02:17:01 EST 2013 | alexeis
Hi, Flying Probe uses only for symptom detection. Do you have software tools for repair station that can helps to your engineering to detect cause? If you need a software tools, feel free to contact me by email: alexeis@proventustech.com. Best Reg
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