A component includes a main body, a first layer, and a second layer. The main body includes a bottom surface. The first layer is provided on the bottom surface of the main body and includes a bottom surface. The second layer is bonded to a metal bonding material on a substrate to be provided physically integrally. The second layer has higher wettability with respect to the metal bonding material in a molten state than the first layer, and protrudes from the bottom surface side of the first layer such that at least a part of the bottom surface of the first layer is exposed on an entire outer circumference side of the second layer.