Surface mount crystal oscillator

Details Surface mount crystal oscillator Surface mount crystal oscillator

2007-04-11

2009-02-10

Tan, Vibol (Department: 2819)

Oscillators

Electromechanical resonator

Crystal

C310S348000, C310S340000

Reexamination Certificate

active

07489208

ABSTRACT:
A surface mount crystal oscillator comprises: a crystal blank; an IC chip in which at least an oscillator circuit using the crystal blank is integrated; a mounting substrate having one main surface on which the crystal blank is disposed, and the other main surface used to mounting the crystal oscillator on a wiring board; and a cover bonded to the mounting substrate for hermetically sealing the crystal blank within a space between the mounting substrate and the cover. The mounting substrate has the one main surface extending outward from a region in which the cover is disposed such that a portion of the one main surface exposes. Test terminals which are electrically connected to the crystal blank are disposed on the exposed region of the one main surface.

REFERENCES:
patent: 6445254 (2002-09-01), Shibuya et al.
patent: 7135810 (2006-11-01), Okajima
patent: 2003/0184398 (2003-10-01), Mizumura et al.
patent: 2003/0197569 (2003-10-01), Mizusawa
patent: 2006/0055478 (2006-03-01), Isimaru
patent: 10-22735 (1998-01-01), None

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