Disclosed herein is a coil component that includes: a ferrite sintered body having a first main surface, a second main surface positioned on an opposite side of the first main surface, and a side surface connecting an outer peripheral edges of the first and second main surfaces; a coil conductor disposed so as to overlap the first main surface of the ferrite sintered body; and a resin layer covering the first and second main surfaces and at least a part of the side surface.

An injection-molding-type magnetic field shielding member is provided. The injection-molding-type magnetic field shielding member according to one embodiment of the present invention comprises: a base part including an arrangement hole that penetrates the center so as to have a predetermined area; a ring-shaped first shielding part, which protrudes a predetermined height from the base part along the edge of the arrangement hole; and an antenna accommodation part which is defined by one surface of the first shielding part and one surface of the base part, and which is formed on the one surface of the base part in the circumferential direction of the first shielding part, wherein the base part and the first shielding part can be integrated through injection molding by using any one material from among ferrite powder, sandust, and nano-grain alloy powder.

A radio frequency (RF) choke for use in a mass spectrometer, comprising a bobbin having a hollow channel, a plurality of wire windings wrapped around said bobbin, each of said wire windings exhibiting a lattice winding pattern having about 1 to about 4 crossover per turn, and magnetic core disposed in said hollow channel of the bobbin.

An exemplary embodiment of the present invention provides a stylus pen including: a body; a conductive tip configured to be exposed from an inside of the body to an outside thereof; and a resonance circuit connected to the conductive tip to resonate an electrical signal transferred from the conductive tip. An inductor unit of the resonance circuit includes a ferrite core and a coil wound in multiple layers over at least a portion of the ferrite core. The ferrite core includes nickel, and the coil can be formed by a litz wire with adjacent winding layers that are wound to be inclined in a zigzag form.