| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring board including a wiring conductor which is excellent in oxidation resistance.SOLUTION: A wiring board 1 includes: an insulation base material 11; and a wiring conductor 12 including a conductor layer 12a provided on the insulation base material 11, a first plating layer 12b provided on a surface of the conductor layer 12a, and a second plating layer 12c provided on a surface of the first plating layer 12b. The wiring conductor 12 includes a protection layer 12d which covers a side surface of the first plating layer 12b and includes a metal material having oxidation reduction potential larger than the first plating layer 12b as a main component. The wiring board 1 reduces the possibility that the metal material of the first plating layer 12b adheres to the second plating layer 12c. |
