| 摘要 |
<p>An inductor device provided with a plurality of insulating layers; coil pattern units each formed between insulating layers; and connection portions for connecting upper and lower coil pattern units separated by the insulating layers to form a coil shape. The coil pattern units each have two substantially parallel linear patterns and a curved pattern connecting first ends of the linear patterns. The ratio A1/A2, where the total of the areas of the two linear patterns seen from the plane view is Al and the area of the curved pattern seen from the plane view is A2, of 1.45 to 1.85, preferably 1.55 to 1.75. When the total area of a unit section of the insulating layer in which one coil pattern unit is contained is A0, the ratio (A1+A2)/A0 is in a range of 0.10 to 0.30, preferably 0.13 to 0.20.</p> |
