Patent ID: 7190235

Claim:
A surface mounting base for an oscillator that is provided with: an insulation base comprising a casing wall having a through hole; a sealing glass that is filled into said through hole and forms a space part on one principal surface side of said insulation base; and a lead terminal, which passes through said sealing glass and clamps an inner surface and an outer surface of said casing wall, and which has a holding part for a crystal element on a top surface of said sealing glass that is one principal surface side of said insulation base, and which has a tip end part bent in a concave shape projecting from a bottom surface of said sealing glass and extending from the inside of said casing wall towards the outside across a tip end surface, and in which said tip end part is soldered to said insulation base; wherein a base part of said lead terminal projects from the bottom surface of said sealing glass, and the inner surface of said tip end part of said lead terminal is distanced from the bottom surface of said sealing glass by at least the thickness of said lead terminal or more.