Patent ID: 8466753
Filing Date: 2013-06-18
Classification: H03H

Abstract:
1. A surface mounted crystal oscillator in which a metal base provided with a plurality of protrusions at a bottom thereof is engaged with and placed on metal pins arranged in a standing condition in a plurality of through holes provided in a base board, and a circuit board is fitted to an upper end of said metal pins, and a crystal resonator is arranged on said circuit board via a heater element, and said metal base is covered with a metal cover, thereby obtaining a sealed structure of said crystal resonator, wherein a two-stage counterbored portion including a first-stage counterbored portion and a second-stage counterbored portion having a larger diameter than that of the first-stage counterbored portion is formed in the bottom of said base board around said metal pins, and a solder or conductive resin is filled in a gap between said first-stage counterbored portion, and said through hole and said metal pin to fix said metal pin in said though hole.