Patent ID: 7382123

Claim:
A micro fluxgate sensor, comprising: an amorphous magnetic core formed on a wafer on which a seed layer is deposited; an excitation coil wound around the amorphous magnetic core; a magnetic field detecting coil wound around the excitation coil and the amorphous magnetic core; a protective film formed on the excitation coil and the magnetic field detecting coil; and a plurality of pads that are formed between the excitation and magnetic field detecting coils to external terminals to connect therebetween by etching the protective film, each of the pads exposing a portion of one of the excitation coil and the magnetic field detecting coil, and each of the pads corresponding to a via-hole in the protective film, wherein each of the plurality of pads overlaps an upper and a lower portion of one of the excitation coil and the magnetic field detecting coil, and wherein the upper portion is disposed above the amorphous magnetic core and the lower portion is disposed below the amorphous magnetic core.