Surface mount type crystal device

Details Surface mount type crystal device Surface mount type crystal device

2007-01-30

2008-11-11

Dougherty, Thomas M (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S340000, C310S365000, C331S068000, C331S10800D

Reexamination Certificate

active

07449820

ABSTRACT:
A crystal device for surface mounting is provided with at least: a container body having a substantially rectangular outer shape and mounting electrodes formed in the four corners of the outside bottom surface of the container body; and a crystal blank hermetically sealed within the container body. The spacing of mounting electrodes on at least one side of the outside bottom surface is less than the length of the mounting electrodes in the direction along that side. A jetty having a height greater than the thickness of the mounting electrodes is provided in the cross-shaped area interposed between the mounting electrodes on the outside bottom surface.

REFERENCES:
patent: 5423207 (1995-06-01), Flechsig et al.
patent: 6507139 (2003-01-01), Ishino et al.
patent: 6628179 (2003-09-01), Yatsuda et al.
patent: 6998925 (2006-02-01), Harima et al.
patent: 2002/0036448 (2002-03-01), Kageyama et al.
patent: 2002/0084858 (2002-07-01), Luff
patent: 2003/0197569 (2003-10-01), Mizusawa
patent: 2005/0184625 (2005-08-01), Miyazaki

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