Surface Finish

Blog cover showing a PCB edge connector with bright gold fingers split between hard gold and ENIG themed colors, illustrating a comparison of finishes for PCB gold fingers.

Hard Gold vs ENIG for PCB Gold Fingers: Which Finish Should You Choose?

PCB Design Tips / By

Hard gold and ENIG are the two most common finishes used on PCB gold fingers, but they behave very differently in real applications. This article explains how each finish is applied, compares wear resistance, solderability, corrosion performance and cost, and then walks through practical recommendations so you can decide whether your edge connectors really need hard gold or if ENIG is good enough.

Hard Gold vs ENIG for PCB Gold Fingers: Which Finish Should You Choose? Read More »

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