| 摘要 |
PROBLEM TO BE SOLVED: To enhance the peeling strength and breaking performance in the bonding time, by a method wherein an alloy Au wire is composed of at least one kind of specific amount of magnesium(MG), vanadium(V) and residual Au containing an inevitable impurity not exceeding a specific wt.%. SOLUTION: An alloy Au wire is composed of at least one kind of magnesium(Mg), vanadium(V) in wt.% of 0.1-20.0, residual Au and an inevitable impurity not exceeding 0.01wt.%. As for such a high purity material Au, a high purity Au containing at least one kind of Mg, V in a specific amount and the material high purity Au exceeding 99.99wt.% preferably 99.995wt.% is used. By adopting such a constitution, the loop height (H1 ) can be made higher (H2 ) suppressing the breaking rate at low level after the heat cycle, furthermore enabling the peeling strength and oscillation breaking performance to be enhanced. |
