IPC-4556: Specification for ENEPIG Plating on PCBs (officially IPC-4556: Specification for Electroless Nickel/Electroless Palladium/Immersion Gold (ENEPIG) Plating for Printed Circuit Boards ) is the definitive industry standard for applying ENEPIG surface finishes. Developed by the IPC Plating Subcommittee (4-14) and amended in 2015, this standard provides strict requirements for ENEPIG layer thicknesses, quality assurance, solderability, and wire bonding performance.
Ensuring that design rules (e.g., wire bonding pads) comply with the plating capabilities defined in the document. Where to Obtain the IPC-4556 PDF ipc4556 pdf
The standard, titled "Specification for Electroless Nickel/Electroless Palladium/Immersion Gold (ENEPIG) Plating for Printed Circuit Boards," is the critical industry guideline for achieving high-reliability surface finishes. It defines the requirements for ENEPIG, a multi-functional "universal finish" capable of supporting both high-strength soldering and various wire bonding technologies. Core Purpose of IPC-4556 Where to Obtain the IPC-4556 PDF The standard,
For engineers, quality managers, and purchasing professionals, having the on hand is crucial for: Conclusion
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