Historical
IPC 4552+Amd2-2012
Specification for Electroless Nickel/Immersion Gold (EMIG) Plating for Printed Circuit Boards with Amendments 1 & 2
Containing full-color photographs, this specification sets the requirements for the use of ENIG as a surface finish for printed boards. It includes requirements for ENIG deposit thicknesses based on performance criteria. The specification’s appendix also includes a free copy of the technical paper, “Standard Developments Efforts of Electroless Nickel Immersion Gold,” by George Milad and Gerard O’Brien.
Association Connecting Electronics Industries [ipc]