The MTSP-1025 from Marktech Optoelectronics is a LED with Forward Voltage 21 V, Forward Current 5 mA, Luminous Intensity cd 0.75 to 3.6 mcd, Luminous Intensity mcd 0.75 to 3.6 mcd, Wavelength 640 to 660 nm. More details for MTSP-1025 can be seen below.