Multi-layer ceramic capacitor and method of producing the same

A multi-layer ceramic capacitor, comprising:

• a multi-layer unit including
• ceramic layers that are made of first ceramics and laminated in a first direction, the first ceramics having a first average crystal grain diameter, and
• internal electrodes disposed between the ceramic layers;
• a side margin that is made of second ceramics and covers the multi-layer unit from a second direction orthogonal to the first direction, the second ceramics having a second average crystal grain diameter;
• and
• a bonding unit that is made of third ceramics and disposed between the multi-layer unit and the side margin, the third ceramics having a third average crystal grain diameter that is larger than the first average crystal grain diameter and the second average crystal grain diameter,
• the first, the second, and the third ceramics including a main phase made of polycrystal of a barium titanate (BaTiO3) based material,
• the third ceramics being different from the first and the second ceramics in a ratio of barium (Ba), titanium (Ti), and oxygen (O) contained in the main phase.