The QL63F5SA from Roithner Lasertechnik is a Laser Diode with Wavelength 637 to 645 nm, Output Power 0.01 W, Operating Voltage 2.2 to 2.5 V, Operating Current 0.055 to 0.075 A, Threshold Current 35 to 50 mA. More details for QL63F5SA can be seen below.