A board terminal electrode component includes a board, and a pair of land pads spaced apart from each other on a surface of the substrate. The pair of land pads respectively include inner ends which are proximal to each other in an arrangement direction, and outer ends farther from each other in the arrangement direction than the inner ends. The pair of land pads respectively include expanding width portions expanding in a width direction from the inner end toward the outer end. The pair of land pads respectively include insulators on a surface of an end portion of the outer end of the land pads.