, "Specification for Electroless Nickel/Electroless Palladium/Immersion Gold (ENEPIG) Plating for Printed Circuit Boards," is the definitive industry standard for the ENEPIG surface finish. Released in 2013 and subsequently updated to the IPC-4556A revision , this document defines the quality requirements, deposit thicknesses, and testing protocols for ENEPIG-finished PCBs.
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Meets IPC-J-STD-003 Category 3 standards for at least 12 months. How to Obtain
Compliance with IPC-4556 is primarily verified using .
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