An electronic device includes: a circuit board having a mounting face, on which an electronic component is mounted; a heat receiver including a heat receiving plate opposed to the electronic component; and a fastening mechanism that fixes the heat receiver to the circuit board. The fastening mechanism includes a receiver having a proximal end and a distal end, the receiver having a mounting hole penetrating from the proximal end to the distal end; and a fastener that is inserted into the mounting hole for fastening to the receiver to press the heat receiver. The receiver is surface-mounted on the mounting face by soldering with the proximal end facing the mounting face.