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Surface-mount type crystal oscillator

  • US 6,229,249 B1
  • Filed: 08/31/1999
  • Issued: 05/08/2001
  • Est. Priority Date: 08/31/1998
  • Status: Expired due to Term
First Claim
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1. A surface-mount type crystal oscillator, comprising:

  • a main body formed with a cavity in a lower portion thereof, the cavity being partitioned from a top surface of the main body by a partition wall and surrounded by cavity walls;

    a crystal oscillating element mounted on the top surface;

    a plurality of terminal electrodes on the main body disposed around the cavity walls and spaced from each other by separating areas of the cavity walls;

    extensions of the cavity protruding into the separating areas so that the terminal electrodes are separated by the extensions of the cavity; and

    a controlling IC chip and an electronic device accommodated in the lower cavity with the electronic device accommodated within the extensions of the cavity.

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