| 摘要 |
PROBLEM TO BE SOLVED: To obtain a printed wiring board which can be soldered with ease and stability while stable high-frequency characteristics are ensured. SOLUTION: One example of printed wiring board comprises a printed wiring board 41 on which a conductive pad 42 shaped like a square for common wiring is disposed and a circular conductive pad 43 for signal lines is placed inside the conductive pad 42. The pad 42 shaped like a square electrically couples through holes 44 in which leads for common wiring of a connector are inserted. Also, by forming the pad in the same shape as the connecting bottom of a connector to be mounted thereon, the pad and the connecting bottom of the connector can be coupled without clearance when the connector is soldered to the printed wiring board. As a result, since shielding is ensured from the connector up to the surface of the printed wiring board, degradation in high-frequency signals can be prevented.
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