Electronics Forum | Tue Aug 21 08:55:13 EDT 2001 | cjrjmj
I have a need to send some Engineers to intro SMT classes. I have found two avenues: 1)ACI (which is to high level!) 2)Cookson CPS which is more in line with intro to SMT process. Are there other that are on re-occurring timelines?
Electronics Forum | Thu Aug 30 12:21:13 EDT 2001 | monkey
Send them to the SMTA - they have classes and courses for all levels. There is one in Boston at the end of next month. They have one at a different location every 3 or 4 months... http://www.smta.org/smtai/index.cfm
Electronics Forum | Fri Aug 31 21:58:21 EDT 2001 | dougk
Has anyone heard of the quality of the electronics classes through the EMPF (i.e. American Competitiveness Institute, Navy 'Mantech' program)?
Electronics Forum | Wed Sep 26 11:58:13 EDT 2001 | Fox
Don't hold me to it but... Class 1-process indicator, varify value (cap, resistor) Class2,3-failure (rework required) This is what we used at my former job when i took over QA responsibility.
Electronics Forum | Mon Mar 10 09:47:31 EST 2003 | davef
James: So, why don't you clean your no-clean? At least then you stand a chance of doing class 2 and class 3 work.
Electronics Forum | Thu Apr 17 16:41:37 EDT 2003 | davef
60% ||||36% of ball area|| >36% ||Class2|| Accept|| Reject ||||45% of ball diameter|| >45% ||||20.25% of ball area|| >20.25% ||Class3|| Accept|| Reject ||||30% of ball diameter|| >30% ||||09% of ball area|| >09%
Electronics Forum | Sun Dec 07 13:16:23 EST 2003 | Kevin Gilbraith
With totally stable screen print (solder paste), placement and reflow processes, what is a world class target first time yield for good pcbs? How bad is 65% FTY. Your views would be welcome.
Electronics Forum | Mon Feb 02 12:36:41 EST 2004 | paul_bmc
90% of the assemblies our company produces are class 3 and we have no problem at all inspecting or getting class 3 quality through reflow. Rarely do we have touch up because of insufficient or poorly reflowed solder joints. What are the problems you
Electronics Forum | Mon May 03 21:39:09 EDT 2004 | ACE
Does anyone know there a standard matrix of clearances part to part for Class 2 and Class 3 board design. IPC does issue a preferred matrix but they are so liberal they not so useful in the real world. Any suggestions would really be appreciated.
Electronics Forum | Wed Oct 13 19:16:42 EDT 2004 | secme
Go to http://www.h-st.com Houston Sigma has been doing almost exclusively Class 3 for years
