Electronics Forum | Wed Feb 22 08:01:42 EST 2006 | INGE
We have a new SMT line, our customers are asking us the validation of the process. Not only the validation of the resulting assembled board (solder joint...) but also a validation of every single machine in the line (ex. stencil printer...). For exam
Electronics Forum | Wed Feb 22 10:32:37 EST 2006 | amol_kane
you could do a capability analysis on the printer.....setup the printer with your print parameters and select a metric (say paste volume deposited) and find out Cp and Cpk values
Electronics Forum | Wed Feb 22 12:19:49 EST 2006 | Dirka Jihabi
I worked for a EMS who makes Medical Device Electronics, and yeah, the FDA's methodology for validation is a complete cluster-fudge! They did it on the principle of...does the shop air going into your equipment REALLY 80 PSI...or is there REALLY 220
Electronics Forum | Thu Feb 23 02:46:16 EST 2006 | INGE
It isn't an FDA validation. I think Steve has centered the problem. I have already defined all the steps and all the procedures of the process, but now I must run X boards, Y times, through each piece of equipment (as he said before); the question is
Electronics Forum | Thu Feb 23 10:49:38 EST 2006 | slthomas
Defining failure modes will help determine what you need to quantify in all processes. Personally I wouldn't pursue the DoE angle (varying setup parameters to determine robustness). 1)How about % pad coverage, paste thickness, and accuracy? Define w
Electronics Forum | Fri May 29 04:37:24 EDT 2015 | buckcho
Hi Alexei, We have met in the past ( simona - > PCB ) Thank you for this input, I might consider > it ! Hello, validating a whole line can be tricky. I can advise you to validate each machine (not the transports) and then put them together in one
Electronics Forum | Tue Nov 01 12:46:23 EST 2005 | chunks
Wow, never heard of this. Hope your board cost isn't too much. Most printers have a kneeding procedure that does this while it prints the board. No waste of any kind when you do this. Conditioning the stencil - must've been in a magazine artile.
Electronics Forum | Thu Jan 05 16:11:21 EST 2023 | capse
Many printer manufacturers use CeTaQ's tools for machine verification. They have a SPI board. It may be the a solution for you.
Electronics Forum | Wed Sep 18 12:31:16 EDT 2002 | dragonslayr
My suggestion is to conduct a Design For Manufacturing (DFM)study on the assembly in question. Pay particular attention to the pad sizes, component lead dimensions and satisfy yourself that those two factors are correct. Given that pads match compone
Electronics Forum | Fri Jul 23 13:14:17 EDT 1999 | Steve Schrader
| Has anyone ever heard of testing solder paste quality by pasting a board and making a determination of the quality by measuring paste height and width after the board is pasted. Would you consider this a valid test for solder paste testing? | Mar
