Ipc-4556 Pdf 〈FULL · RELEASE〉

Criteria for visual inspection, adhesion, and cleanliness.

If your PCB requires ENIG, IPC-4556 is the mandatory specification you must invoke. ipc-4556 pdf

Provides a low-resistance, tarnish-free surface that ensures excellent solderability and long-term shelf life. Technical Advancements in IPC-4556A (2025) Criteria for visual inspection, adhesion, and cleanliness

Adoption of IPC-4556 requires PCB fabricators to upgrade their capabilities significantly. Criteria for visual inspection

Electroless Nickel / Electroless Palladium / Immersion Gold (ENEPIG) as a surface finish for printed circuit boards (PCBs). Key Features of the IPC-4556 Standard