| 摘要 |
PROBLEM TO BE SOLVED: To provide a solder alloy where storing property is good since the secular changes of various characteristics are small, additionally the variation of quality is small and wet spreadability, bondability and the like are excellent.SOLUTION: A Pb-free solder alloy contains one or more kinds among Mg, Mn, Ni and Sb. The content of Mg when being contained is 0.01 mass% or more and 1.10 mass% or less, the content of Mn when being contained is 0.01 mass% or more and 1.00 mass% or less, the content of Ni when being contained is 0.01 mass% or more and 2.00 mass% or less, the content of Sb when being contained is 0.01 mass% or more and 19.00 mass% or less and the balance is In except inevitable impurities. In the color of the surface of the solder alloy represented by L*a*b* display system, L* is 77.0 or more and 99.8 or less, a* is -12.0 or more and 10.0 or less and b* is -10.0 or more and 11.0 or less.SELECTED DRAWING: None |
