MANUFACTURING METHOD FOR GOLD WIRE FOR PACKAGE AND THE GOLD WIRE FOR PACKAGE

摘要

PROBLEM TO BE SOLVED: To offer a gold wire for package, which has high signal transmission rate and reduces material cost, and its manufacturing method. SOLUTION: This manufacturing method of a gold wire for package is as follows. First, a pure Ag or Pd wire rod 1 is subjected to a drawing process 2, to decrease the diameter of the wire rod 1 to produce a extremely thin core wire 3 with a diameter of 1 to 500 m. Next, the surface of the core wire 3 is plated with pure gold to 0.025 to 25 m in thickness in a plating process 4. Then, quality inspection 5 is performed. Thus, a gold wire 6 for package, which is not made of pure gold only but made by coating the outside of the core wire 3 with pure gold, is obtained. This gold wire 6 for package satisfies the condition of high signal transmission rate, and substantially reduces material cost.