The RLT650-500-T from Roithner Lasertechnik is a Laser Diode with Wavelength 645 to 660 nm, Output Power 0.5 W, Operating Voltage 2.1 to 2.3 V, Operating Current 1.37 to 1.5 A, Threshold Current 850 to 1000 mA. More details for RLT650-500-T can be seen below.