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MULTILAYER CERAMIC CAPACITOR AND MOUNTING BOARD HAVING MULTILAYER CERAMIC CAPACITOR MOUNTED THEREON

  • US 20140209362A1
  • Filed: 04/26/2013
  • Published: 07/31/2014
  • Est. Priority Date: 01/29/2013
  • Status: Active Grant
First Claim
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1. A multilayer ceramic capacitor, comprising:

  • a ceramic body having a plurality of dielectric layers laminated therein, the dielectric layers respectively having an average thickness of 0.2 to 2.0 μ

    m;

    an active layer including a plurality of first and second internal electrodes alternately exposed through both end surfaces of the ceramic body having the dielectric layer interposed therebetween and contributing to capacitance formation;

    an upper cover layer formed above the active layer;

    a lower cover layer formed below the active layer, the lower cover layer being thicker than the upper cover layer; and

    first and second external electrodes covering the end surfaces of the ceramic body,wherein a bottommost internal electrode adjacent to the lower cover layer has an oxide layer formed on at least one of top and bottom surfaces thereof, andwhen a length and a thickness of the bottommost internal electrode are denoted by Le and te, respectively, and a length and a thickness of the oxide layer are denoted by Lo and to, respectively, in a cross section of the ceramic body taken in length and thickness directions, 50%<

    Lo/Le×

    100 and 30%<

    to/te×

    100<

    80% are satisfied.

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