Ferrite composition, ferrite sintered body, and electronic device

A ferrite composition comprising a main component and a sub component, wherein

• the main component includes:
• 40.5 to 50.0 mol % of an iron oxide in terms of Fe2O3;
• 6.0 to 14.0 mol % of a copper oxide in terms of CuO;
• 7.0 to 25.0 mol % of a zinc oxide in terms of ZnO;
• and
• a nickel oxide as a remainder of the main component,
• with respect to 100 parts by weight of the main component, the sub component includes:
• 3.1 to 10.0 parts by weight of a cobalt oxide in terms of Co3O4;
• 0.5 to 4.0 parts by weight of a tin oxide in terms of SnO2;
• and
• less than 0.20 parts by weight (including zero) of a bismuth oxide in terms of Bi2O3, and
• A is −3.5 or more and 1.0 or less, provided that A=(α−18)/β, wherein
• α is an amount of the zinc oxide represented by mol % in terms of ZnO in the main component, and
• β is an amount of the cobalt oxide represented by parts by weight in terms of Co3O4 with respect to 100 parts by weight of the main component.