| 摘要 |
PURPOSE:To decrease a defect due to damage during working by taking a wide soldering region of four times or over in the distance between the electrode end at the middle of a piezoelectric substrate and the soldering region with respect to the thickness of the piezoelectric resonator and decreasing the distance between the two soldering regions so as to improve the strength of the piezoelectric vibrator. CONSTITUTION:An energy confinement type piezoelectric resonator 1 where electrodes 3a, 3b are opposed to each other at the middle part of the piezoelectric substrate 2 and a couple of lead terminals 4a, 4b soldering respectively the electrodes 3a, 3b near both short sides of the piezoelectric resonator 1 are provided. The distance P between the electrodes 3a, 3b at the middle of the piezoelectric substrate 2 and the soldering region is selected to be four times or over with respect to the thickness (t) of the piezoelectric resonator 1 and the soldering region in soldering a couple of lead terminals 4a, 4b is taken wide to decrease the distance between the soldering region l of both short sides of the piezoelectric resonator 1. Thus, the deflective strength applied to the piezoelectric resonator 1 is reduced. The effect due to the reflection of the vibration wave at the soldering region is almost less and the characteristic is not deteriorated.
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