Samsung Electro-mechanics Co., Ltd.

Hea Ah Kim

Jae Yeol Choi

Youn Kyu Choi

Yun Young Yang

Mi Jung Kang

A power inductor includes a substrate having a through hole in a central portion thereof; a first internal coil pattern and a second internal coil pattern each having a spiral shape and provided on opposite surfaces of the substrate outwardly of the through hole; a magnetic body enclosing the substrate on which the first internal coil pattern and the second internal coil pattern are provided, end portions of the first internal coil pattern and the second internal coil pattern being exposed to opposite end surfaces thereof; a first external electrode and a second external electrode provided on the opposite end surfaces of the magnetic body to be connected to the end portions of the first internal coil pattern and the second internal coil pattern, respectively; and an anti-plating layer covering the magnetic body between the first external electrode and the second external electrode.

Power inductor and method of manufacturing the same

A magnetic composition includes: coarse powder containing a non-crystalline iron-based material; medium powder containing a crystalline iron-based material; and fine powder containing nickel. A ratio of the coarse powder and the medium powder is in a range of 65:35 to 80:20, and the amount of the fine powder is in a range of 3 wt % to 7 wt % on the basis of a total weight of the coarse powder and the medium powder.

Growing community of inventors

Suwon-si, South Korea

Hea Ah Kim