Patent ID: 8749123
Filing Date: 2014-06-10
Classification: G01K,H03H

Abstract:
1. A piezoelectric vibrator, comprising: an element mounting member having a substrate portion, a first frame portion provided on one major surface of the substrate portion, and a second frame portion provided on the other major surface of the substrate portion; a piezoelectric vibration element mounted on a piezoelectric vibration element-mounting pad provided on the one major surface of the substrate, the one major surface being environmentally exposed in a space of a first concave portion formed by the substrate portion and the first frame portion; a thermistor element mounted on a thermistor element-mounting pad provided on the other major surface of the substrate, the other major surface being environmentally exposed in a space of a second concave portion formed by the substrate portion and the second frame portion; and a cover for hermetically sealing the space of the first concave portion, wherein electrode terminals for external connections are provided on at least four corners of a major surface of the second frame portion of the element mounting member, the major surface being opposite to a surface on which the piezoelectric vibration element-mounting pad is electrically connected only with a subset of the electrode terminals for external connections, the thermistor element-mounting pad is electrically connected only with another subset of the electrode terminals for external connections other than the subset of the electrode terminals for external connection with which the piezoelectric vibration element-mounting pad is electrically connected.