Surface mount type temperature-compensated crystal oscillator

Oscillators – Electromechanical resonator – Crystal

Reexamination Certificate

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Details

C331S068000, C331S069000, C331S10800D, C331S176000

Reexamination Certificate

active

07394327

ABSTRACT:
A surface mount type temperature-compensated crystal oscillator includes a crystal blank; an IC chip integrating an oscillation circuit using the crystal blank and a temperature compensation mechanism of compensating frequency temperature characteristics of the crystal blank; and a substantially rectangular parallelepiped container body for surface mounting having a first recess of housing the crystal blank and a second recess of housing the IC chip. Respective side surfaces corresponding to the long sides of the container body are provided with crystal inspection terminals for inspecting oscillation characteristics of the crystal blank and respective side surfaces corresponding to the short sides are provided with data writing terminals for writing temperature compensation data to the temperature compensation mechanism. A conductive path electrically connecting the IC chip to the crystal inspection terminal is formed to be shorter than a conductive path electrically connecting the IC chip to the data writing terminal.

REFERENCES:
patent: 6229249 (2001-05-01), Hatanaka et al.
patent: 2006/0055478 (2006-03-01), Isimaru
patent: 2003-204221 (2003-07-01), None

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