Abstract: An optical sensor includes a light receiver and a circuit portion electrically connected to the light receiver, and the circuit portion includes a substrate, an electronic component on the substrate, a resin covering the electronic component, and a metal pillar electrically connected to the electronic component and including a portion covered with the resin and a portion exposed from the resin, and the light receiver is located on the circuit.

Abstract: An acceleration sensor element includes a weight portion, a base portion that has a frame shape surrounding the weight portion, a beam portion that supports the weight portion on the base portion, and a strain detector portion on the beam portion. The base portion includes four frame sides. The acceleration sensor is mounted such that one of the frame sides of the acceleration sensor element faces a mounting surface of a component-receiving board. In other words, the beam portion of the acceleration sensor element is located at the frame side opposite to the mounting surface.