Surface mount crystal oscillator

Details Surface mount crystal oscillator Surface mount crystal oscillator

2007-03-15

2009-06-23

Pascal, Robert (Department: 2817)

Oscillators

With outer casing or housing

C331S067000, C331S10800D, C331S10800D, C331S158000, C310S348000

Reexamination Certificate

active

07551040

ABSTRACT:
A surface mount crystal oscillator comprises a package body having a first recess, a cover having a second recess, a crystal blank secured to an inner bottom surface of the second recess, and an IC chip secured to a bottom surface of the first recess. The IC chip has an oscillation circuit using the crystal oscillator integrated therein, and has IC terminals on one main surface for connection to the outside. A first and a second annular metal film are disposed to surround open end surfaces of the first recess and second recess, respectively. By bonding the first and second annular metal films with an eutectic alloy, the crystal blank and IC chip are hermetically sealed in a space defined by the integrated first and second recesses.

REFERENCES:
patent: 4293986 (1981-10-01), Kobayashi et al.
patent: 6452460 (2002-09-01), Oda
patent: 6720837 (2004-04-01), Moriya et al.
patent: 6847265 (2005-01-01), Tanaka et al.
patent: 7034441 (2006-04-01), Ono et al.
patent: 7123108 (2006-10-01), Isimaru
patent: 2000-134037 (2000-05-01), None

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