Electronics Forum | Fri Jun 29 12:47:25 EDT 2012 | deanm
We are experiencing widely varying First Pass Yields for selective soldering. Some boards are near 100% while others are less than 50% depending on the pitch and general complexity of the board. Question: If you are running 100 boards through your s
Electronics Forum | Tue Oct 26 10:10:03 EDT 2010 | kapa
We are currently using Mydata (12 and 15) and are now looking at Fuji CP-743 and IP-3, what quality expectation can I have? I am looking for First Pass Yield data from your production with CP-743 and IP-3 machines. Please state type of products you p
Electronics Forum | Fri Nov 10 09:09:48 EST 2006 | russ
That is great point John, it definitely gets you closer to apples vs apples. Remeber one time when we were compared to a another Mfgr that made a square box of plastic for one of our customers we made the PCB the fit into that box, we had wires, fi
Electronics Forum | Fri Jan 05 12:17:31 EST 2007 | Cmiller
Our first pass yield across all our products is above 95% but we include anything that does not meet IPC standards. Probably 75% of our failures are not electrical. AOI is a great tool to get a consistent measure of your process. I dont know how anyo
Electronics Forum | Wed Apr 04 18:25:07 EDT 2007 | darby
Don't think much of the people who run the line do you mate? "BUT is operator dependent, so if he feels lucky just change the reel without verification and machine will not stop if he didn't follow the procedure having a high probability of Wrong co
Electronics Forum | Mon Dec 08 18:52:47 EST 2003 | Craig M
Stability of process is what your measuring so lets not assume a stable process(if your process was perfect you would have no defects). With no test a medium complexity board will be around 68.7% (according to Consulogic). I dont have many other sour
Electronics Forum | Thu Sep 13 13:29:06 EDT 2001 | mparker
Dave et al, I just print out and read a copy of the aforementioned recommended article. Mr. Mangin gives a clear picture of why DPMO is to be considered a more pure data than First Pass Yield (FPY). However, I must note that his interpretation of h
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