Coil component

A coil component comprising:

• an element assembly that includes
• a support substrate having a cavity,
• a first coil, disposed on a first principal surface of the support substrate, and having a first core portion,
• a second coil, disposed on a second principal surface of the support substrate, and having a second core portion, and
• a magnetic portion;
• and
• a first outer electrode and a second outer electrode electrically coupled to the first coil, and a third outer electrode and a fourth outer electrode electrically coupled to the second coil, each of the outer electrodes being disposed on a surface of the element assembly,
• wherein
• the cavity of the support substrate, the first core portion of the first coil, and the second core portion of the second coil overlap at least one another in plan view when viewed in the direction perpendicular to the principal surface of the support substrate,
• the magnetic portion is disposed in at least the cavity of the support substrate, the core portion of the first coil, and the core portion of the second coil, and
• the support substrate is formed of sintered ferrite.