An object of the invention is to provide a surface mount type crystal oscillator in which a probe can be easily brought into contact with a crystal inspection terminal. The surface mount type crystal oscillator is such that a crystal piece and an IC chip are housed within a container main body having a bottom wall and frame wall formed with laminated ceramics, and a communication terminal is provided on an outer side surface of the container main body. The communication terminal is provided so as to span from the outer side surface of the bottom wall to the outer bottom surface of the outer wall, the communication terminal is made the crystal inspection terminal, and the crystal piece and the IC chip are arranged in parallel on the inner bottom surface within the container main body.