The DF2S5.1ASL from Toshiba is a Power Diode with Dynamic Resistance 70 ohm, Reverse Current 1 uA, Reverse Voltage 4.8 to 5.4 V, Repetitive Peak Reverse Voltage 1.5 V, Non-Repetitive Peak Forward Current 2.5 A. Tags: Surface Mount. More details for DF2S5.1ASL can be seen below.