Patent ID: 7458823

Claim:
An electronic circuit device, comprising: a circuit board mounted with a circuit part; a plurality of terminals, a part of each of which is mounted on the circuit board and electrically connected with the circuit board; and a casing made of a resin material, wherein the casing is formed to seal an entire body of the circuit part, a mounting face of the circuit board, on which the circuit part is mounted, and said parts of the terminals with the resin material, the casing is formed with an accommodation pocket for accommodating a battery, the other parts of the terminals are exposed to air in said accommodation pocket so that they can be electrically connected with a battery disposed therein, and the other face of the circuit board opposite from the mounting face provides a part of an outer surface of the casing, wherein the plurality of terminals are provided to contact a positive electrode and a negative electrode, respectively, of a battery disposed in said accommodation pocket, the circuit part and the terminals are electrically connected to the circuit board through soldering, and said resin material is a heat-hardening resin, whose hardening reaction temperature is lower than a melting point of a solder used to solder the circuit part and the terminals to the circuit board.