Patent ID: 6498555
Filing Date: 2002-12-24
Classification: H01F

Abstract:
A monolithic inductor comprising:a sintered ceramic body; and a plurality of coil conductor sections including a plurality of coil conductors, each of which is wound by at least one full turn; wherein the plurality of the coil conductor sections are located at different vertical positions in said sintered ceramic body, and upper and lower coil conductor sections are electrically connected through via-hole electrodes to define a coil having an innermost portion and an outermost portion, a terminal end of the upper coil conductor section and a beginning end of the lower coil conductor section are bent inwardly from the innermost portion of the coil such that a connecting portion of the coil defined by the terminal end of the upper coil conductor section, the beginning end of the lower coil conductor section and one of the via-hole electrodes provided to connect the terminal end of the upper coil conductor section and the beginning end of the lower coil conductor section is located within and spaced inwardly from the innermost portion of the coil defined by the upper and lower coil conductor sections, and the terminal end of the upper coil conductor section and the beginning end of the lower coil conductor section are not aligned and do not overlap one another along respective lengths thereof; and substantially all portions of said upper coil conductor section are aligned with and overlap substantially all portions of said lower coil conductor section in the vertical direction of said sintered ceramic body.