Electronics Forum | Tue Jun 26 11:24:41 EDT 2018 | applebar
We are a very small EMS that has been sued by a large OEM customer. We built a board, it passed the customer supplied tester, but we had accidentally put a wrong part on it. This was discovered years after we had been placing this part. The cust
Electronics Forum | Thu Jun 28 16:46:30 EDT 2018 | applebar
thank you for the reply it was our error- there was a change notice via a spreadheet in a resistor value; the operator used the old reel/old value. Customer did not pay for AOI. Customer supplied tester passed all the boards, even with the wrong (u
Electronics Forum | Thu Jun 28 12:44:11 EDT 2018 | dleeper
A few questions: How did you put the wrong part on for so many years and not catch it? Was this due to an error in the customer supplied data like an incorrect BoM or an internal error such as a P&P machine programming error? How wrong was the wron
Electronics Forum | Sat Feb 10 06:35:42 EST 2007 | Charls
Hi Friends, We would like to know what is the procedure to test Cp & Cpk on Reflow oven at customer place .
Electronics Forum | Mon Feb 12 10:28:49 EST 2007 | davef
CK the Flip Guy You're correct. Some profiler suppliers include a Cp, Cpk calculatoromiter with their very nice units.
Electronics Forum | Mon Feb 12 12:52:48 EST 2007 | stepheniii
Would their calculatoromiters set off my BS detector? It's quite sensitive with things like Cp,Cpk and use of statistics. Or are they actually genuinely usefull?
Electronics Forum | Mon Feb 12 15:32:10 EST 2007 | davef
stepheniii Unsure how they determine that the process is stable and in control, a prerequisite to calculating Cp, Cpk. A trained chimp smoking a cigar could calculate Cp, Cpk.
Electronics Forum | Sat Feb 10 09:36:52 EST 2007 | davef
Choices are: * Run a Cp, Cpk capable profiler through the oven. * Review the results of your supplier's process qualification that would include Cp, Cpk on their oven. Handspring contract [REV. 6 - 7/1/99] with Flextronics says: [snip] 4. Process Ca
Electronics Forum | Mon Feb 12 10:06:46 EST 2007 | CK the Flip Guy
DaveF, Please define a "Cp/Cpk capable profiler." Do you mean one that has software that automatically calculates this for you? I do this at my company, and we track 2 critical variables - Time Above Liquidous and Peak Temps. and this is done on a
Electronics Forum | Fri May 02 08:23:34 EDT 2014 | rway
Agreed, as long as the customer has the choice. The FSE should not make assumptions that the customer will provide all the tools. When they show up without any tools and no communication with the customer to that effect, the customer has no choice
