Inductor

An inductor, comprising:

• a core comprising a first flange, a second flange, and a middle section, where the middle section is sandwiched between the first flange and the second flange, the middle section is wound around by a coil, the first flange has a first side upon which at least an electrode is configured, the second flange has a second side upon which at least an electrode is configured, and the coil is connected to the electrodes;
• a floor plate, where the first flange has another side opposite to the first side with no electrode, the second flange has another side opposite to the second side with no electrode, and the floor plate is adhered to the first flange's another side and to the second flange's another side;
• a first protection layer completely covering the floor plate, and partially covering the first flange, the second flange, and the middle section, and the at least an electrode on the first side and the at least an electrode on the second side are exposed outside the first protection layer;
• and
• a second protection layer completely covering the coil around the middle section,
• wherein the first protection layer has a vertical coverage of the first flange, the second flange, and the middle section up to the first side the first flange and the second side of the second flange but not over the electrodes thereupon, and
• wherein the first protection layer partially covers the middle section to expose a portion of the coil between the first flange and the second flange, and the second protection layer is opposite to the first protection layer and is arranged between the first flange and second flange to cover the exposed portion of coil.