| 摘要 |
To provide a technique that can improve the reliability of coupling between a package with a PA module and a mounting board in mounting the package over the mounting board. The width of a back conductor pattern is made smaller than the width of each of back terminals. Specifically, for example, the back terminals are arranged in the X direction. The back terminals arranged in parallel to the X direction are coupled together by the back conductor pattern. At this time, the coupling direction (coupling line direction) of the back conductor pattern is the X direction. Taking into consideration the Y direction orthogonal to (intersecting) the X direction, the width of the back conductor pattern in the Y direction is made smaller than the width of each of the back terminals in the Y direction.
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