Multilayer ceramic electronic component including metal terminals including intermetallic compound

A multilayer ceramic electronic component comprising:

• a multilayer ceramic electronic component main body including a multilayer body including a plurality of ceramic layers and a plurality of internal conductive layers that are laminated, a first main surface and a second main surface opposed to each other in a height direction, a first lateral surface and a second lateral surface opposed to each other in a width direction orthogonal or substantially orthogonal to the height direction, and a first end surface and a second end surface opposed to each other in a length direction orthogonal or substantially orthogonal to the height direction and the width direction, a first external electrode on the first end surface, and a second external electrode on the second end surface;
• a first metal terminal connected to the first external electrode via a bonding material;
• a second metal terminal connected to the second external electrode via a bonding material;
• an exterior material covering the multilayer ceramic electronic component main body, a portion of the first metal terminal, and a portion of the second metal terminal;
• wherein
• the first metal terminal includes a first bonding surface bonded to the bonding material and a first contact surface in contact with the exterior material;
• the second metal terminal includes a second bonding surface bonded to the bonding material and a second contact surface in contact with the exterior material;
• the first contact surface in contact with the exterior material includes a surface of a first outermost surface metal film and a surface of a first intermetallic compound having a wettability lower than the surface of the first outermost surface metal film;
• and
• the second contact surface in contact with the exterior material includes a surface of a second outermost surface metal film and a surface of a second intermetallic compound having a wettability lower than the surface of the second outermost surface metal film.