DS1046-37C1S1 is a Connfly surface-mount optical receiver from Sumitomo Electric Industries. It is a 1-channel, optical receiver module with a wide operating range from 1.25 Gb/s to 12.5 Gb/s. It has low power dissipation and excellent wide temperature range of -40 to +85°C. It is ideal for applications in offices, industrial environments, automotive, and general lighting. It has an integrated driver/output IC, optical shut down switch, and protection circuit. The module has a flat black housing, SFP-style connector, and gold-plated contacts.