Dear Members,
Is anybody out there looking at statistical data (control charts, Cp, Cpk values) of plating thicknesses processes for say, ENIG and evaluating your board house/s on it? Are there any procedures (IPC or otherwise) for doing so? what matrices can be reasonably achieved for plating processes? If this analysis is looked it, is it just a one time deal or is this a recurrent activity (like every 6 months or 1 year or some other time period)

Wanted to know the general trend in the industry.

Thanks in advance,
Amol





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