| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce electric resistance in a through hole conductor where a connection pin is not inserted, and to provide a wiring board that can be sufficiently utilized as a circuit for power supplies or for ground. SOLUTION: This wiring board 1 has an insulating layer 2 having front and back surfaces 6 and 7, a plurality through holes 8 passing between the front and back surfaces 6 and 7 in the insulating layer 2, and first and second through hole conductors 10a and 10b that are separately formed in the plurality of through holes 8 and at the same time have a hollow section 11 along an axis center. In this case, a connection pin 20 connecting to the outside is inserted into the hollow section 11 of the first through hole conductor 10a, and a dummy pin 21 that is not connected to the outside is inserted into the hollow section 11 of the second through hole conductor 10b.</p> |
