With the rapid development of high-frequency and high-reliability electronic products, the limitations of traditional ENIG (Electroless Nickel Immersion Gold) surface finishes have become increasingly evident. EPIG (Electroless Palladium Immersion Gold) has emerged as an advanced alternative, especially for RF, microwave, and fine-pitch PCB applications. This article, optimized and technically interpreted by KKPCB, presents a comparative...
What Is ENIG PCB Surface Finish? What Is ENIG in PCB Manufacturing? ENIG (Electroless Nickel Immersion Gold) is one of the most widely used and highly reliable PCB surface finishes in the electronics industry. As a chemical deposition process, ENIG forms a two-layer metallic coating—a nickel barrier layer followed by a thin immersion gold layer—without...
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