The SF5408 from Vishay is a Power Diode with Forward Current 3 A, Forward Voltage 1.7 V, Reverse Current 0.005 to 0.05 mA, Repetitive Peak Reverse Voltage 1000 V, Non-Repetitive Peak Forward Current 80 to 150 A. Tags: Through Hole. More details for SF5408 can be seen below.