Electronics Forum | Tue Sep 26 20:16:07 EDT 2000 | Dave F
I agree with Wolfgang that a check list, like he proposes, is very useful in evaluating your ability to assemble products. No sense designing a 16 inch board if the throat of your wave is 15 inches. Taking a different tact � what if you define your
Electronics Forum | Tue Jan 30 17:36:59 EST 2001 | slthomas
Looking for recommendations for references on quality an process control.....SPC, process capability (cp, cpk), etc. My feet are a little wet on this stuff, but we'll be implementing soon so I'll need a reference to bail me out on occasion. You kn
Electronics Forum | Fri Jan 17 16:24:04 EST 2003 | MA/NY DDave
Hi I haven't seen the DEK software you describe in action or studied it, yet I will tell you to be careful of some of the software on the market even from good companies. Spend the time needed to understand how the software makes the calculations,
Electronics Forum | Mon Dec 06 17:02:52 EST 1999 | Michael Stewart
Have you ever tried using a vision system for measuring the part placement accuracy and then clacualting the Cpk's from these results, or do you strictly use the machine vision itself? My concern with using the machine vision is that it it is biased
Electronics Forum | Tue Oct 27 12:13:54 EST 1998 | Sanjay Bhatikar
sirs, which equipment manufacturers provide Cp and Cpk values for automatic stencil printing equipment? what would be a good experiment for specifying these process indices? Cheers - have a nice day - Sanjay
Electronics Forum | Tue Jul 08 18:37:54 EDT 2003 | MA/NY DDave
Hi AlC, Q: Who calculates Cp, Cpk. It depends on the company, it's size and structure. Some expect the SMT / Process Engineer to do this work and others have all kinds of other groups involved. YiEngr, MA/NY DDave
Electronics Forum | Mon Mar 10 15:52:26 EST 2003 | eagle-eyed-one
Hello Neil, I absolutely agree with the conclusion of limits as you have stated. There are 2 sets of limits in which machines can be measured against for compliant performance. First and most critical being the quality performance specification limit
Electronics Forum | Fri Jul 09 09:01:18 EDT 1999 | Marc P
| | Hi! | | I'm a process engineer attempting to do a capability study on our existing convection reflow oven - Heller 1500. It was recommended by an independent consultant to do at the very least, load testing, process ready testing, and board unif
Electronics Forum | Fri Jan 17 04:07:12 EST 2003 | iman
A) Paste Printer : A1) identify the critical SMDs' pads. (choice should go to the BGA, CSP, MLF types...RES,CAP last in line...) A2) get a Paste measurement machine that measures readings of paste height (or better - volume) you are paste printing
Electronics Forum | Tue Mar 19 07:55:19 EST 2002 | jax
It might just be me, I have been known to loose my mind, but I don't believe I understand the question. If your asking for an idea of how much paste volume you should have for this part, I think its a little late. You already have the stencil so your
