Multilayer ceramic capacitor

A multilayer ceramic capacitor comprising:

• a laminate including a dielectric ceramic layer and an internal electrode layer that are laminated in a lamination direction;
• and
• an external electrode connected to the internal electrode layer;
• wherein
• the laminate includes a first main surface and a second main surface that oppose each other in the lamination direction, a first lateral surface and a second lateral surface that oppose each other in a width direction perpendicular or substantially perpendicular to the lamination direction, and a first end surface and a second end surface that oppose each other in a length direction perpendicular or substantially perpendicular to the lamination direction and the width direction;
• the internal electrode layer includes a first internal electrode layer extending to the first end surface and a second internal electrode layer extending to the second end surface so as to oppose the first internal electrode layer with the dielectric ceramic layer therebetween;
• the external electrode includes a first external electrode disposed on the first end surface and connected to the first internal electrode layer, and a second external electrode disposed on the second end surface and connected to the second internal electrode layer;
• the laminate includes a central layer portion in which the first internal electrode layer and the second internal electrode layer are alternately laminated with the dielectric ceramic layer therebetween, a peripheral layer portion sandwiching the central layer portion in the lamination direction and made of a ceramic material, and a side margin sandwiching the central layer portion and the peripheral layer portion in the width direction and made of a ceramic material;
• the side margin includes an inner layer on an innermost side in the width direction and an outer layer on an outermost side in the width direction;
• a content of Si in the peripheral layer portion is equal or substantially equal to a content of Si in the inner layer;
• an element of an additive of the ceramic material included in the peripheral layer portion is the same as an element of an additive of a ceramic material included in the inner layer;
• and
• the element of the additive of the ceramic material included in the inner layer is different from an element of an additive of a ceramic material included in the outer layer.

A multilayer ceramic capacitor comprising:

• a laminate including a dielectric ceramic layer and an internal electrode layer that are laminated in a lamination direction;
• and
• an external electrode connected to the internal electrode layer;
• wherein
• the laminate includes a first main surface and a second main surface that oppose each other in the lamination direction, a first lateral surface and a second lateral surface that oppose each other in a width direction perpendicular or substantially perpendicular to the lamination direction, and a first end surface and a second end surface that oppose each other in a length direction perpendicular or substantially perpendicular to the lamination direction and the width direction;
• the internal electrode layer includes a first internal electrode layer extending to the first end surface and a second internal electrode layer extending to the second end surface so as to oppose the first internal electrode layer with the dielectric ceramic layer therebetween;
• the external electrode includes a first external electrode disposed on the first end surface and connected to the first internal electrode layer, and a second external electrode disposed on the second end surface and connected to the second internal electrode layer;
• the laminate includes a central layer portion in which the first internal electrode layer and the second internal electrode layer are alternately laminated with the dielectric ceramic layer therebetween, a peripheral layer portion sandwiching the central layer portion in the lamination direction and made of a ceramic material, and a side margin sandwiching the central layer portion and the peripheral layer portion in the width direction and made of a ceramic material;
• the side margin includes an inner layer on an innermost side in the width direction and an outer layer on an outermost side in the width direction;
• a content of Si in the peripheral layer portion is equal or substantially equal to a content of Si in the inner layer;
• and
• a content of Si in the central layer portion is equal or substantially equal to the content of Si in the inner layer.