Patent ID: 7135938
Filing Date: 2006-11-14
Classification: H01L,H03H

Abstract:
1. A surface-mount crystal oscillator comprising: a casing substantially in a shape of a substantially rectangular parallelepiped, said casing having a recess defined therein; a pair of upper steps disposed in said recess; a lower step disposed in said recess and having electrically conductive pads thereon; a crystal blank having an end secured to one of said upper steps and an opposite end placed on the other of said upper steps; and an IC chip disposed on the bottom of said recess and electrically connected to said electrically conductive pads by wires according to wire bonding, said IC chip including a circuit, said circuit and said crystal blank jointly making up an oscillating circuit; wherein said electrically conductive pads are formed only on said lower step along a longitudinal side of the casing; wherein said electrically conductive pads are no provided along a shorter side of the recess of the casing.