| 摘要 |
PURPOSE:To provide an automatic wire bonder by which an irregularity in a ball diameter is small when a ball is formed by making an electric discharge from a discharging electrode more stable. CONSTITUTION:A discharging electrode 1a and its head part 1b are molded by using a Pt alloy which contains Pt at a purity of 99.9% or one kind or two or more kinds out of 1 to 35wt.% of Ir, 1 to 30wt.% of Pd, 1 to 20wt.% of Au, 1 to 25wt.% of Ni, 1 to 10wt.% of W and 1 to 15wt.% of Ru and which is composed of 65wt.% of Pt as the remainder, and an automatic wire bonder 1 is manufactured. |
