Electronics Forum | Wed Feb 17 09:23:00 EST 2016 | ronhammer
Does anyone know what the normal fallout rate is for a 12 layer PCB from the board house during testing? We received the inspection data from a recent set of boards. Looking over the report there failure rate looks high to us, but with out knowing wh
Electronics Forum | Wed Aug 01 12:23:21 EDT 2007 | stepheniii
Don't forget rework, post production eco's and other mods. Also if it's on a generic base, how do you spot slight misplacments? Board shops have some fallout, now the fallout with be with the assembly makers and with components trapped on the subst
Electronics Forum | Wed Feb 03 11:38:04 EST 2010 | stepheniii
It stop sounding good to me at "30 layer PCB".
Electronics Forum | Thu May 09 16:54:43 EDT 2013 | smter
We used to have similar issues with large fallout on ours. I have been writing the date on mine for the last few years. We were having premature fallout due to our techs not installing them with proper screw installing pattern, which seemed to be cau
Electronics Forum | Tue Feb 02 17:10:03 EST 2010 | flipit
Remember this is a 30 layer PCB. If it is built in a multi up panel, there is lots of room for error. Lets say there are 10 circuits per panel. Say you have a 10% scrap rate that happens randomly within the 10 up panel of circuits. Apply this 10%
Electronics Forum | Thu Jan 09 10:33:23 EST 2003 | Hussman
Very good consultant answers. Has anyone evry really used T&H data to ever determine fallout? I've seen it recorded many times over the years, but all it does is take up floor space to store the charts from the recorders.
Electronics Forum | Mon Feb 01 13:17:38 EST 2010 | davef
We'd reject the lot, as an excuse to sit with our supplier and try to determine the cause of the problem.
Electronics Forum | Wed Feb 03 13:14:56 EST 2010 | jamyboy
The strange part is that this shop produced these PCBs no problem before DDI took over? I am still trying to get them to tell me what the expected yield is going forward..
Electronics Forum | Fri Jan 20 09:28:54 EST 2012 | dmiller
3-5% is extremely high. Think of that in terms of DPMO. 5% fallout would be a 50000 DPMO. That's not acceptable for most people.
Electronics Forum | Wed May 06 21:48:41 EDT 2020 | SMTA-Robert
Has the pandemic and the economic fallout from it cause you and your company to rethink your China/Asia outsourcing strategy? Also have your thoughts changed regarding JIT/Kanban/Lean manufacturing practices in view of the present situation?
