| 摘要 |
PURPOSE: To obtain an inductor which is low in DC resistance and has a high Q factor by a method wherein a coil conductor pattern has such a structure where the inner part of a spiral pattern is set smaller in pattern width than the center and outer part of the spiral pattern. CONSTITUTION: An inductor 1 is composed of insulating sheets 11 where 3-turn spiral coil conductor patterns 3 and 4 are each provided on their surfaces, insulating sheets 11 where lead-out patterns 2 and 5 are each provided, and an insulating sheet 11 where no conductor pattern is provided. The coil conductor patterns 3 and 4 are laid out in such a manner where their ends 3b and 4b are each located at the centers of the sheets 11 and spiral parts are laid out between the centers and the outer peripheral edges. The inner parts (i) of the coil conductor patterns 3 and 4 are set smaller in pattern width than their center parts (j) and outer parts (k).
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