Inductive component and manufacturing method therefor

An inductive component, comprising a coil having a hollowed central portion wound by Litz wire, a magnetic plastic packaging layer covering the coil, and a first electrode and a second electrode which are respectively connected to a first leading-out terminal and a second leading-out terminal of the coil, wherein the first electrode and the second electrode are exposed outside the magnetic plastic packaging layer, wherein the magnetic plastic packaging layer comprises a top surface, a bottom surface, and opposing first side surface and second side surface, an axial direction of the central portion of the coil is perpendicular to the top surface and the bottom surface, and parallel to the first side surface and the second side surface, wherein the first electrode is connected to the first leading-out terminal of the coil by penetrating through the first side surface, the second electrode is connected to the second leading-out terminal of the coil by penetrating through the second side surface, the first electrode extends downwards on the first side surface to form a side surface electrode portion of the first electrode and is bent to extend on the bottom surface to form a bottom surface electrode portion of the first electrode, and the second electrode extends downwards on the second side surface to form a side surface electrode portion of the second electrode and is bent to extend on the bottom surface to form a bottom surface electrode portion of the second electrode;

• wherein the bottom surface of the magnetic plastic packaging layer is formed with a first bottom surface electrode groove and a second bottom surface electrode groove, wherein the bottom surface electrode portion of the first electrode is accommodated in the first bottom surface electrode groove, and the bottom surface electrode portion of the second electrode is accommodated in the second bottom surface electrode groove, thereby keeping the magnetic plastic packaging layer flat with the first electrode and the second electrode, wherein the Litz wire is formed by twisting a plurality of self-adhesive wires insulated from each other, and the self-adhesive wire comprises a copper conductor, an insulating layer coated on a surface of the copper conductor, and a self-adhesive layer coated on an outer surface of the insulating layer;
• the insulating layer is a polyurethane, polyester or polyester imide primer layer;
• the self-adhesive layer is a polyimide self-adhesive layer or a polyamide self-adhesive layer;
• wherein the number of strands of the Litz wire is 7;
• the copper conductor has a diameter of 0.20 mm, the insulating layer has a single side thickness of 1-5 μm, and the self-adhesive layer has a single side thickness of 0.8-3.0 μm.