Feedthrough capacitor

A feedthrough capacitor comprising:

• an element body including a pair of end surfaces opposing each other, and at least one side surface located between the pair of end surfaces;
• a pair of first external electrodes disposed on the pair of end surfaces, respectively;
• a second external electrode spaced apart from the pair of first external electrodes and disposed on the side surface;
• a first internal electrode disposed in the element body and including a pair of first portions exposed to the pair of end surfaces;
• and
• a second internal electrode disposed in the element body to oppose the first internal electrode and including a second portion exposed to the side surface, wherein
• each of the first external electrodes includes:
• a first sintered electrode layer covering the corresponding first portion and being connected to the corresponding first portion;
• a second sintered electrode layer disposed on the first sintered electrode layer;
• and
• a plated layer disposed on the second sintered electrode layer,
• the second external electrode includes:
• a third sintered electrode layer covering the second portion and being connected to the second portion;
• and
• a plated layer disposed on the third sintered electrode layer,
• the first, second, and third sintered electrode layers include a void,
• a void fraction of each of the first and third sintered electrode layers is larger than a void fraction of the second sintered electrode layer,
• each of the first external electrodes includes a first conductor portion located on the corresponding the end surface,
• the second external electrode includes a second conductor portion located on the side surface,
• a surface area of the second conductor portion is smaller than a surface area of the first conductor portion, and
• a surface roughness of the second conductor portion is larger than a surface roughness of the first conductor portion.