Abstract: A gold-coated silver bonding wire includes: a core material containing silver as a main component; and a coating layer provided on a surface of the core material and containing gold as a main component. The gold-coated silver bonding wire contains gold in a range of not less than 2 mass % nor more than 7 mass %, and at least one sulfur group element selected from the group consisting of sulfur, selenium, and tellurium in a range of not less than 1 mass ppm nor more than 80 mass ppm, with respect to a total content of the bonding wire.

Abstract: A gold-coated silver bonding wire includes: a core material containing silver as a main component; and a coating layer provided on a surface of the core material and containing gold as a main component. The gold-coated silver bonding wire contains gold in a range of not less than 2 mass % nor more than 7 mass %, and at least one sulfur group element selected from the group consisting of sulfur, selenium, and tellurium in a range of not less than 1 mass ppm nor more than 80 mass ppm, with respect to a total content of the bonding wire.

Abstract: A palladium coated copper wire for ball bonding includes a core formed of pure copper or copper alloy having a purity of 98% by mass or more, and a palladium draw coated layer coated on the core. The copper wire has a diameter of 10 to 25 ?m, and the palladium drawn layer contains sulfur, phosphorus, boron or carbon.

Abstract: A noble metal-coated copper wire for ball bonding, with a wire diameter between 10 ?m or more, and 25 ?m or less, includes a core material having a copper alloy having a copper purity of 98 mass % or higher, and a noble metal-coating layer formed on the core material. The noble metal-coating layer includes a palladium cavitating layer containing palladium; at least one element selected from the group consisting of Group 13 to 16 elements or an oxygen element, finely dispersed in the palladium; and a diffusion layer formed of copper diffused into the palladium. The noble metal-coating layer may include a palladium cavitating layer containing palladium, at least one element selected from the group consisting of Group 13 to 16 elements or an oxygen element, finely dispersed therein, and a nickel intermediate layer disposed between the core material and the noble metal-coating layer.

Abstract: A palladium coated copper wire for ball bonding includes a core formed of pure copper or copper alloy having a purity of 98% by mass or more, and a palladium draw coated layer coated on the core. The copper wire has a diameter of 10 to 25 ?m, and the palladium drawn layer contains sulfur, phosphorus, boron or carbon.