ENEPIG is chosen for its versatility. The IPC-4556 standard mandates that the finish must pass rigorous tests for:
Protects the nickel layer from hyper-corrosion during the immersion gold process. It enhances wire bondability and strengthens the intermetallic bond. 3. Immersion Gold (Au) Thickness Requirement: 0.03 to 0.09 µm (1.2 to 3.5 µin). ipc4556 pdf
Here are some key takeaways from the IPC-4556 PDF document: ENEPIG is chosen for its versatility
The IPC 4556 PDF is a valuable resource for the electronics industry, providing a comprehensive standard for ENIG plating on PCBs. By following this standard, manufacturers and suppliers can ensure consistency, quality, and reliability in their products. This report highlights the importance of IPC 4556 and its role in promoting excellence in the electronics industry. By following this standard, manufacturers and suppliers can
The standard was originally released in 2013 and most recently updated with in 2025. It provides strict guidelines for layer thicknesses and quality testing to ensure long-term reliability and a shelf life of at least 12 months. Critical Layer Thickness Requirements
The primary purpose of the IPC-4556 standard is to eliminate structural assembly failures by establishing exact, statistically verified boundaries for tri-layer plating. What is ENEPIG?