Electronics Forum | Wed Jan 23 09:38:37 EST 2008 | brulal1
I would like to get statistic from SPC plus on regular basis, the problem is: Software is slow and freezing. The only stat I could get from it are general. The nigthmare start went we try to dig to find what cause the defect. It�s possible, but it ai
Electronics Forum | Fri Aug 15 10:23:56 EDT 2008 | ck_the_flip
Ovens, and any other process for that matter, will ALWAYS vary. It's called process variation. I do Cpk (process capability) on my ovens. I track time-above-liquidus and peak temperatures. Statistics will validate how repeatable your oven is.
Electronics Forum | Sun Apr 25 11:05:58 EDT 2010 | davef
Try: * Statistical Process Control for SMT; Dr. William Messina; Datasleuths; ISBN: 0967503396; 1999 * http://www.google.com/search?q=calculate+cp+cpk&ie=utf-8&oe=utf-8&aq=t&client=firefox-a&rlz=1R1GGLL_en___US374
Electronics Forum | Wed Apr 01 08:23:05 EDT 2015 | emeto
All you have to do is to go on the floor when the machines are running and see yourself what the speed is. All machines show this data and even more. Most machines show some statistical data too - you can dig a little bit into that and you will get y
Electronics Forum | Sat Mar 17 14:29:28 EDT 2018 | jacobidiego
Hi Experts, Would you point me into the right direction? I am looking a way to download data from smt machinery to avoid having to the in-situ machine's panel, and as we have mixed brands in multiple lines, it gets very hard to analize data. Is the
Electronics Forum | Thu Mar 22 20:32:09 EDT 2018 | jacobidiego
Hi Alexei, Is your solution opensource? Yes, I understand that most manufacturers try to sell licenses for their own SPC softwares, however sometime the information is stored in a file that could be opened.... for example hitachi HT-100 has Recall D
Electronics Forum | Mon Aug 19 20:44:01 EDT 2002 | davef
George: There is no industry standard for the calculation of process capability. Although, you should be aware of IPC-9850, Surface Mount Placement Equipment Characterization Actually, there is a grand bulk of discussion on process capability in t
Electronics Forum | Thu Sep 23 08:47:25 EDT 2021 | majdi4
1)Though in many cases the difference between SAC305 and SAC405 was small,and not always statistically significant, it was observed that SAC405 generally outperformed SAC305 joints. Under 0°C to 100°C thermal cycling,no statistically significant
Electronics Forum | Wed Sep 08 16:00:09 EDT 1999 | Mark D.
My company is looking to perform "real time" statistical process control on our current SMT operations. I have identified the critical processes for SPC but have not had much luck in finding a system(s) that can monitor the required processes for my
Electronics Forum | Fri Jan 30 14:32:45 EST 1998 | Mike C
| I am just implementing a Statistical Process Control to the SMD. | A few simple questions: | 1. Is it necessary to perform a sampling plan for suppliers inspection? | 2. What are the basical points to control ourself and inspection at a supplier? I
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