Disclosed herein is a common mode noise filter independently including ferrite powder having pores formed in a surface thereof or including at least two kinds of ferrite powder having different particle sizes as a magnetic layer.According to the present invention, the adhesive strength between the polymer binder and the ferrite powder that are included in the magnetic layer is improved, such that at the time of manufacturing or mounting of a chip, a defect such as a crack generated by a thermal impact due to a lack of adhesive strength between the ferrite powder and the polymer binder may be suppressed, thereby securing the reliability with respect to the thermal impact.