The SLI-343YY(W) from ROHM Semiconductor is a LED with Forward Voltage 1.9 V, Forward Current 50 mA, Luminous Intensity cd 0.036 to 0.16 cd, Luminous Intensity mcd 36 to 160 mcd, Reverse Current 100 uA. More details for SLI-343YY(W) can be seen below.