Manufacturing method of coil-embedded inductor using soft magnetic molding solution and coil-embedded inductor manufactured by using the same

A manufacturing method of a coil-embedded inductor having a structure in which a part of a coil is embedded in a magnetic core, the manufacturing method comprising:

• (I) preparing an organic vehicle;
• (II) preparing a soft magnetic molding solution having a density of 5.5 to 6.5 g/cc by mix-milling a soft magnetic powder with the organic vehicle;
• (III) positioning and fixing a part of the coil in a case;
• and
• (IV) forming the magnetic core by injecting and curing the soft magnetic molding solution into the case,
• wherein the soft magnetic molding solution in step (II) is formed with a composition ratio of 94 to 98 wt % of the soft magnetic powder and 2 to 6 wt % of the organic vehicle,
• wherein the soft magnetic powder is formed by mixing three or more soft magnetic powders having different average particle diameters, and
• wherein the soft magnetic powder is formed by mixing a first soft magnetic powder having an average particle diameter of 2 to 5 μm, a second soft magnetic powder having an average particle diameter of 10 to 20 μm, and a third soft magnetic powder having an average particle diameter of 50 to 150 μm.