The SML-P24MUW(R) from ROHM Semiconductor is a LED with Forward Voltage 2.1 to 2.2 V, Forward Current 20 mA, Luminous Intensity cd 0.01 to 0.052 cd, Luminous Intensity mcd 10 to 52 mcd, Reverse Current 100 uA. More details for SML-P24MUW(R) can be seen below.