Ferrite core and coil component comprising same

A coil component comprising:

• an Mn—Zn based ferrite core;
• and
• a coil wound around the Mn—Zn based ferrite core,
• wherein the Mn—Zn based ferrite core includes a plurality of grains including Mn at 30 to 40 mol %, Zn at 5 to 15 mol %, and Fe at 50 to 60 mol %, and a plurality of grain boundaries disposed between the plurality of grains,
• the plurality of grains and the plurality of grain boundaries include Co, Ni, SiO2, CaO, and Ta2O5,
• content of the Co and the Ni in the plurality of grains is two or more times higher than content of the Co and the Ni in the plurality of grain boundaries,
• content of the SiO2, the CaO, and the Ta2O5 in the plurality of grain boundaries is two or more times higher than content of the SiO2, the CaO, and the Ta2O5 in the plurality of grains,
• an average separation distance between the plurality of grains is in a range of 1 to 2 μm, and
• an average grain diameter of the plurality of grains is in a range of 7 to 12 μm.