| 摘要 |
<p>PROBLEM TO BE SOLVED: To average currents of a plurality of power supply via conductors.SOLUTION: On a surface layer 201, a power supply pad 221, and a power supply conductor pattern 222 continuous to the power supply pad 221 are arranged. On an inner layer 202, a power supply conductor pattern 224 is arranged. The power supply conductor pattern 222 and the power supply conductor pattern 224 are electrically connected with each other by a power supply via conductor group 223 consisting of a plurality of power supply via conductors 231. The plurality of power supply via conductors 231 are arranged at intervals from each other so that a center point of each power supply via conductor 231 is included within a prescribed region of a distance of 0.4×R in a radial direction from a circular arc Cof a radius R using the center point of the power supply pad 221 as a center when a median of a distance between a center point Pof the power supply pad 221 and a center point of each power supply via conductor 231 is defined as R.</p> |
