Semiconductor device and electronic apparatus with O-ring reinforcement structure

A semiconductor device which detects pressure, the semiconductor device comprising:

• a base substrate;
• a detector mounted on an upper surface of the base substrate and including a pressure detector to detect pressure;
• a resin package provided on the upper surface of the base substrate, with the detector buried therein, and including a cavity which exposes the pressure detector upward;
• a lid supported by the resin package so as to close the cavity;
• and
• a communicating portion to cause the cavity to communicate with outside of the semiconductor device;
• wherein the resin package includes:
• a base portion where the detector is buried;
• and
• a protruding portion protruding upward from the base portion and including the cavity;
• in plan view, the base portion extends outward from an outer side surface of the protruding portion;
• the lid is supported by an upper surface of the protruding portion;
• the lid includes an extending portion in at least a portion of an outer circumferential portion of the lid, the extending portion extending outward from the outer side surface of the protruding portion in plan view;
• and
• the communicating portion is open sideward of the semiconductor device to communicate with outside.