The QL63D5S-A/B/C from Quantum Semiconductor International is a Laser Diode with Wavelength 630 to 640 nm, Output Power 5 mW, Output Power 5 mW, Operating Voltage 2.2 to 2.7 V, Operating Current 31 to 45 mA. More details for QL63D5S-A/B/C can be seen below.