COMMON MODE NOISE FILTER AND MANUFACTURING METHOD FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a common mode noise filter that enhances the function of removing a common mode noise, and a manufacturing method for the same.SOLUTION: A common mode noise filter has a first lamination portion 11, a non-magnetic material portion 13 which is provided on the first lamination portion 11 and contains two built-in coils 12, and a second lamination portion 14 provided on the non-magnetic material portion 13. A magnetic material portion 15 whose area gradually decreases toward the lower side is formed at a winding shaft portion of the coil 12 of the non-magnetic material portion 13, and the thickness of the first lamination portion 11 is set to be larger than the second lamination portion 14.SELECTED DRAWING: Figure 1