Method for manufacturing magnetic substrate and common mode filter

摘要

A common mode filter is manufactured to include a coil part including an insulation layer and a conductor pattern formed in the insulation layer; and a magnetic substrate coupled to one surface or both surfaces of the coil part. The magnetic substrate includes: an electrostatic absorbing layer made of an electrostatic absorbing material; a magnetic layer provided on one surface or both surfaces of the electrostatic absorbing layer and made of a magnetic material; and an electrode provided between the magnetic layer and the electrostatic absorbing layer and made of a conductive material. Therefore, common mode filter may maintain high efficiency characteristics while preventing an electrostatic discharge phenomenon.

主权项

1. A method for manufacturing a magnetic substrate, the method comprising:
(A) forming a first magnetic layer made of a magnetic material; (B) forming a first electrode by printing a conductive material on the first magnetic layer; (C) stacking a first electrostatic absorbing layer made of an electrostatic absorbing material on the first magnetic layer and the first electrode; and (D) simultaneously firing the first magnetic layer, the first electrode, and the first electrostatic absorbing layer.