| 摘要 |
The present invention provides a coil component which directly attaches a terminal electrode to a surface of a magnetic body and has excellent adhesion between the magnetic body and the terminal electrode, high mounting strength, low resistance, and a small size. The coil component (10) comprises an air-core coil (20) embedded in a magnetic body (12) consisting of a resin (14) and metal magnetic particles (16). Both ends (26A, 26B) of the coil (20) are exposed on a surface of the magnetic body (12), and the surface on which both ends (26A, 26B) are exposed is polished and etched to form terminal electrodes (30A, 30B). Specifically, an underlying layer (32) made of a metallic material is formed across the surface of the magnetic body (12) and the ends (26A, 26B) by sputtering, and then a cover layer (34) is formed. Insulation is secured on a portion where the underlying layer (32) and the resin (14) come in contact with each other in a portion where the magnetic body (12) and the underlying layer (32) come in contact with each other. Tight adhesion is secured by contact between the underlying layer (32) and the exposed portion of the metal magnetic particles (16) to increase adhesion strength of the terminal electrodes (30A, 30B). |
