Patent ID: 7573341

Claim:
A surface mount type crystal oscillator comprising: a crystal blank; an IC chip which incorporates an oscillation circuit using said crystal blank; a substantially rectangular parallelepiped container body for surface mounting which houses said crystal blank and said IC chip; and mounting electrodes provided in four corners of an outer bottom surface of said container body; wherein said container body has an upper top surface and through-holes extending between said bottom surface to said top surface to thereby form through-hole surfaces extending between the bottom surface and the top surface, and wherein each of said mounting electrodes is provided so as to extend over a side surface of said container body as an end face electrode, at least one adjustment terminal is disposed above said end face electrode on the side surface of said container body electrically isolated from said end face electrode, and the corresponding adjustment terminal is formed within a contiguous through-hole surface, said adjustment terminal being longer along the height direction of the container body than said end face electrode.