High frequency band EMI (EMI) noise filter composition

摘要

The present invention relates to a composition for producing a high-frequency band noise filter. The present invention relates to a Ni-Cu-Zn ferrite as a base composition,₂O₃Or Co₂O₃And 0.2 to 3 wt%, respectively, or in combination. The filter composition of the present invention has an advantage that the noise cancellation frequency can be shifted to a predetermined frequency band while maintaining high impedance and loss characteristics in a high frequency band.