The FFSD0665B from onsemi is a Power Diode with Forward Current 6 to 9.1 A, Forward Voltage 1.38 to 2.40 V, Reverse Current 0.5 to 160 uA, Repetitive Peak Reverse Voltage 650 V, Non-Repetitive Peak Forward Current 442 to 493 A. Tags: Through Hole. More details for FFSD0665B can be seen below.