The SLD-1250-110-YY-5 from Innolume is a Superluminescent Diode with Wavelength 1240 to 1260 nm, Output Power 3 to 4 mW, Bandwidth (FWHM) 90 to 110 nm, Operating Current 800 to 900 mA, Forward Voltage 1.8 to 1.9 V. More details for SLD-1250-110-YY-5 can be seen below.