| 摘要 |
There is provided a resonator having a piezoelectric ceramic resonator which has excellent free-fall resistance. The resonator comprises a piezoelectric ceramic resonator 2 with a vibrating electrode formed, and a substrate 3 which supports the piezoelectric ceramic resonator 2 , wherein the piezoelectric ceramic resonator 2 satisfies the condition of U>=0.88xH+20.28, wherein U=maximum elastic energy (kJ/m<SUP>3</SUP>) per unit volume, and H=drop height (m) (H>1). The present invention can be applied to a resonator 1 , wherein the substrate 3 has terminal electrodes 31, 32 , and the piezoelectric ceramic resonator 2 is in electrical continuity with the vibrating electrode and is supported on the substrate 3 at both ends via a conductive stator 4.
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