Patent ID: 7760034

Claim:
A surface-mount type crystal oscillator, comprising: a container body having a bottom wall, and a frame wall having an opening and provided on one principal surface of said bottom wall; a crystal blank hermetically encapsulated in a recess of said container body, which is formed by said opening of said frame wall; and an IC chip on which an oscillating circuit using said crystal blank is integrated, wherein a region which is a region on the one principal surface of said bottom wall and other than formation regions of said frame wall and said recess is made a flat part, and said IC chip is fixed to the one principal surface of said bottom wall by flip-chip bonding, in said flat part, a crystal inspection terminal which is electrically connected to said crystal blank is provided on a surface of said flat part, a protection resin is injected between a circuit formation plane of said IC chip and said one principal surface, and a jetty, which is smaller in height than a diameter of a bump for use in said flip-chip bonding and is narrower in width than frame width of said frame wall, is provided along an outer perimeter of said flat part, and said protection resin is injected into said flat part in a region surrounded by said jetty.