Wire Bonding Plating: Best Choice for Strong Results

Summary for wire bonding plating Discussion

wire bonding plating is answered most directly by Mark Baker, who says soft, pure gold is best for wire bonding on copper leadframes. He notes that grain refiners can be added without sacrificing gold purity, and suggests consulting a precious metal supplier about a proprietary grain refiner. The original question from Wong Yew Hoong asked which of six platings—nickel, silver, copper, palladium, soft gold, or hard gold—would give the best wire bonding in a factory setting. No other alternatives were recommended in the thread, so the practical takeaway is that soft, pure gold is the preferred choice, with supplier guidance on refiners if needed.