Hi Techneters, One of customers specifies 2.5 micrometer as a minimum thickness of the gold plating on gold PCB's connector. According to our knowledge, the acceptable industrial standard today is 0.75 micrometer gold plating over 2.5 micrometer nickel. Also, according to IPC 6012 classes 1,2 - 0.8 micrometer gold over 2.5 micrometer nickel is speciefied. The customer is concerned that the gold thickness below 2.5 micrometer will cause decreased reliability due to mechanical wear. We ask for an advice on the relationship between gold thickness, mechanical wear and the rate of degradation if 0.75 micrometer gold plating over 2.5 micrometer nickel is used. Hillel Hillel Dzigan - Quality Manager Eltek Ltd. Phone +972-3-939-5022, Fax +972-3-930-9581 P.O. Box 159, Petach-Tikva 49101, ISRAEL