Ipc-4556 - Pdf
If your PCB requires ENIG, IPC-4556 is the mandatory specification you must invoke.
IPC-4556 establishes the for printed circuit boards. ENIG is widely used because it provides: ipc-4556 pdf
Reliability of ENEPIG by Sequential Thermal Cycling and Aging If your PCB requires ENIG, IPC-4556 is the