Multilayer ceramic capacitor and manufacturing method thereof

A multilayer ceramic capacitor comprising:

• a multilayer structure in which each of a plurality of ceramic dielectric layers and each of a plurality of internal electrode layers are alternately stacked, a main component of the plurality of dielectric layers being ceramic, the multilayer structure having a rectangular parallelepiped shape, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face of the multilayer structure, the first edge face facing with the second edge face,
• wherein:
• a concentration of a rare earth element of at least one of an end margin region and a side margin region with respect to a main component ceramic is lower than a concentration of the rare earth element of a capacity region with respect to a main component ceramic;
• a total concentration of Si and B of the at least one of the end margin region and the side margin region with respect to the main component ceramic is higher than a total concentration of Si and B of the capacity region with respect to the main component ceramic;
• the capacity region is a region in which a set of internal electrode layers exposed to the first edge face of the multilayer structure face with another set of internal electrode layers exposed to the second edge face of the multilayer structure is a capacity region;
• the end margin region is a region in which internal electrode layers coupled to the first edge face of the multilayer structure face with each other without sandwiching internal electrode layers coupled to the second edge face of the multilayer structure and a region in which internal electrode layers coupled to the second edge face of the multilayer structure face with each other without sandwiching internal electrode layers coupled to the first edge face of the multilayer structure;
• and
• the side margin region is a region that covers edge portions to which the plurality of internal electrode layers extend toward two side faces other than the first edge face and the second edge face.