| 摘要 |
PROBLEM TO BE SOLVED: To provide a land pattern shape of a user substrate whose counterpart adjacent mounting electrodes are not short-circuited even a piezo-electric component is miniaturized and are not influenced by thermal stress due to sudden temperature change caused by reflow etc. and to provide the piezo-electric component mounted thereon. SOLUTION: In the substrate having the land pattern 18 shape on which the mounting electrodes 17 of an electronic component A are mounted so that they coincide with the land pattern 18 position of the user substrate 30, the land pattern 18 extends in the directions point-symmetrically and perpendicularly extending from respective sides of the electronic component A. COPYRIGHT: (C)2007,JPO&INPIT
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