The DF2B12M4SL from Toshiba is a Power Diode with Dynamic Resistance 0.65 ohm, Reverse Current 0.1 uA, Reverse Voltage 11.5 to 16.0 V, Repetitive Peak Reverse Voltage 11 V, Non-Repetitive Peak Forward Current 1 A. Tags: Surface Mount. More details for DF2B12M4SL can be seen below.