Problem To realize high reliability and a long-term stabilized power supply in the connection between a power supply terminal and a power supply land on a circuit board. A first dielectric layer having a first opening and a second opening is formed on the semiconductor substrate. The back is over-molded by a first material extending over the substrate. The comparatively large p-contact area allowed by the self-aligned architecture contributes to a lower diode voltage and less heat during continuous wave operation of the laser diode. The sidewall entrance allows easy access to the litter box by animals.