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IPC 4556A-2025
Specification for Electroless Nickel/Electroless Palladium Immersion Gold (ENEPIG) Plating for Printed Boards
IPC-4556A Standard sets the requirements for the use of Electroless Nickel/Electroless Palladium/ Immersion Gold (ENEPIG) as a surface finish for printed boards. IPC-4556A standard defines ENEPIG deposit thicknesses for applications including soldering, wire bonding, and as a contact finish.
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Association Connecting Electronics Industries [ipc]
