Pb-free Snamp;#x2014;Agamp;#x2014;Cuamp;#x2014;Al or Snamp;#x2014;Cuamp;#x2014;Al solder

摘要

A solder alloy includes Sn, optional Ag, Cu, and Al wherein the alloy composition is controlled to provide a strong, impact-and thermal aging-resistant solder joint that has beneficial microstructural features and is substantially devoid of Ag₃Sn blades.