SC CUT QUARTZ OSCILLATOR

摘要

A quartz piece is processed to have a predetermined outer shape, thereby providing an SC cut quartz oscillator capable of reliably and reproducibly suppressing B-mode resonance. In this SC cut quartz oscillator, the surface of the quartz crystal orthogonal to the Y-axis is rotated through 33º- 35º around the X-axis and then from this rotated position it is rotated through 22º- 24º around the Z-axis, and the crystal is cut from the last rotated surface along the X'-axis to form a slender oblong crystal piece. The end surface of the crystal piece orthogonal to the Z'-axis is tilted in a direction rotated through +7º - +13º or -7º - -13º around the X'-axis.