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...


