A compensation circuit for reducing intersymbol interference products within an electrical data signal corresponding to a detected data signal received via a signal transmission medium provides for selective application of compensation to individual, discrete data signal components. A reflection member is connected to the reflector and includes an annular groove with which a light release ring is engaged. A flexible liner positioned within the cavity in the container has an outer surface corresponding in shape to the inner surface of the container, an inner surface defining a cavity in the liner, and an annular lip along the top end of the side wall defining an opening into the cavity in the liner. The semiconductor device is mounted to the mounting surface of the heat dissipating member.