Optical transceiver

An optical transceiver configured to be inserted into an apparatus in a first direction, the optical transceiver comprising:

• a circuit board having a first side and a first edge, the first edge being provided at an end thereof in the first direction;
• a circuit component mounted on the first side of the circuit board;
• an electrical connector configured to hold the first edge of the circuit board;
• a thermal conductive member configured to be attached on the first side of the circuit board and touch the circuit component;
• the thermal conductive member having a first thermal conductive face inclined with respect to the first side of the circuit board and parallel to the first direction;
• a filling material having a thermal conductivity;
• and
• a housing having an inner face and an inner space defined by the inner face, the housing being configured to house the circuit board, the circuit component, the thermal conductive member, and the filling material, and configured to hold the electrical connector at an end thereof in the first direction, the housing having a second thermal conductive face facing the first thermal conductive face with a spacing;
• wherein the filling material adheres to the first thermal conductive face and the second thermal conductive face.