The surface-mount type crystal oscillator includes a container body made of laminated ceramics, having a flat bottom wall layer, a frame wall defining a recess and a step portion formed at an inner wall of the recess, a crystal blank fixed to the step portion, an IC chip fixed to an inner bottom surface of the recess and a pair of inspection terminals provided on outer side surfaces of the container body and used to measure a vibration characteristic of the crystal blank. The bottom wall layer is made up of a first layer making up an outer bottom surface of the container body and a second layer between the first layer and the frame wall, and the inspection terminals are formed so as to extend across an end face of the second layer and the outer side surface of the frame wall.