The QL63D5SA from Roithner Lasertechnik is a Laser Diode with Wavelength 630 to 640 nm, Output Power 0.005 W, Operating Voltage 2.2 to 2.7 V, Operating Current 0.034 to 0.05 A, Threshold Current 30 to 40 mA. More details for QL63D5SA can be seen below.