Patent ID: 8516879

Claim:
A gas sensor comprising: a sensing element to output a concentration signal representing a concentration of a gas component in a gas; a storage medium to store individual information prepared individually for the sensing element for use in control of the sensing element; a circuit board supporting the storage medium mounted on the circuit board: a seal portion of a resin covering the circuit board liquid-tightly; an output base including a mount surface facing to the circuit board, and supporting a terminal portion which is connected with the circuit board and arranged to deliver the individual information through the circuit board; and the output base including a support projection projecting from the mount surface and including a support surface supporting the circuit board, wherein the circuit board includes a first board surface and a second board surface opposite to the first board surface, the support surface of the support projection of the output base is arranged to abut on the first board surface facing toward the mount surface of the output base, and the storage medium is mounted on the second board surface.