Patent ID: 7414307

Claim:
An electronic device comprising: leads having one-end portions serving as connector terminals for electrical connection to an external circuit, a first recess arranged at each of the leads and having an electronic component associated therewith, a second recess having a depth greater than that of the first recess and being arranged contiguous to the first recess and opposite the electronic component, an electronic circuit for issuing a signal output, which is connected inside a package case integrally molded with said leads, an electronic component electrically bonded to portions of said leads between said electronic circuit and said connector terminals, and gap forming structure for forming a gap having a thickness of not less that 70 μm between said leads and said electronic component, whereby a thickness of a joining substance used as means for electrically bonding said electronic component is set to be not less than 70 μm, and wherein said electronic component mounted on said leads is sealed and restrained by molding of a resin having the coefficient of linear expansion smaller than that of a package case, but larger than that of said electronic component without leaving voids, and when a solder is used as said joining substance, said electronic component is sealed and restrained in combination with a molded resin having properties capable of dissolving precipitated solder flux.