Piezoelectric vibrator

A piezoelectric vibrator (10) having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates (16,24) are supported by pillars (4) on a main surface of an enclosure (12) and substantially parallel to the main surface of the enclosure. Spacers (34) having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers (32) are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate. In this way, the amplitudes of the piezoelectric vibrating plates are restricted. Therefore, if an impact is applied, the piezoelectric vibrating plates are prevented from cracking or bending, thus improving the shock resistance.