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Chip inductor and method for manufacturing the same

  • US 7,460,000 B2
  • Filed: 11/17/2004
  • Issued: 12/02/2008
  • Est. Priority Date: 01/23/2004
  • Status: Active Grant
First Claim
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1. A chip inductor comprising:

  • a chip main body and a pair of external connection electrodes, the chip main body including a substrate and a laminate including plural conductor patterns and plural insulating layers alternately laminated on the substrate, each conductor pattern including turns, the plural conductor patterns are connected to each other in series in a lamination direction thereof so as to constitute a coil, one of the external connection electrodes attached to one side-end surface of the chip main body and connected to one end of the coil, and the other external connection electrode attached to the other side-end surface of the chip main body and connected to the other end of the coil;

    whereinouter diameter dimensions of the plural conductor patterns constituting the coil are substantially equal; and

    a thickness of the laminate body and a thickness of the substrate are substantially equal, so that a lowermost-layer conductor pattern is located substantially in a midsection of the chip main body;

    the lowermost-layer conductor pattern is the conductor pattern having the largest number of turns, and a number of turns of the other plural conductor patterns are substantially equal to each other; and

    the number of turns of the lowermost-layer conductor pattern is about 1.5 turns, and the number of turns of the other conductor patterns is about 1 turn.

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