The DF5A6.2LFU from Toshiba is a Power Diode with Dynamic Resistance 50 ohm, Reverse Current 2.5 uA, Reverse Voltage 5.9 to 6.5 V, Temperature operating range -55 to 125 Degree C, Reverse Breakdown Voltage 5.9 to 6.5 V. Tags: Surface Mount. More details for DF5A6.2LFU can be seen below.