Solderability performance of tin coated copper alloy strip for connector components

Copper and copper alloy strip metals used in connector applications are coated with tin to prevent tarnishing ,maintain solderability, and provide surfaces with low contact resistance. Solderability performance was studied for a variety of copper-base alloys that were tin-coated with conventional electroplating methods and with a newer hot dipped air leveled method. The solderability performance of newer hot dipped coatings is generally equivalent or superior to that of the electroplated product. Further improvement in solderability can be leveraged through basis alloy selection