| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring board, and a method of manufacture, in which a composite coaxial through hole conductor can be reduced in size. SOLUTION: The wiring board 1 comprises a composite coaxial through hole conductor 5 including an outer through hole conductor 8 having a central axis 9 penetrating a central board 2 between the major surfaces thereof, and a central conductor 16 disposed inside the outer through hole conductor 8 substantially coaxially thereto. The wiring board 1 further comprises first and second via conductors 26, 27 formed, respectively, in the first resin insulation layer 3 on the central board 2 a second resin insulation layer 4 and connected with the central conductor 16 on the central axis 9. |
