| 摘要 |
PROBLEM TO BE SOLVED: To constitute a SAW device that endures a temperature change in heat cycle testing or the like, when the SAW device is constituted by using a piezoelectric substrate having strong pyroelectric effects. SOLUTION: In a surface acoustic-wave device, a surface acoustic-wave device element, formed by arranging at least one IDT electrode on the piezoelectric substrate having the strong pyroelectric effect, is bonded and fixed to the internal bottom section of a package by using adhesive. In such a surface acoustic-wave device, the hardness of the adhesive is set to Shore 28 or smaller. COPYRIGHT: (C)2007,JPO&INPIT
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