The FFSD08120A from onsemi is a Power Diode with Forward Current 8 to 22.5 A, Forward Voltage 1.45 to 2.40 V, Reverse Current 200 to 400 uA, Repetitive Peak Reverse Voltage 1200 V, Non-Repetitive Peak Forward Current 480 to 530 A. Tags: Through Hole. More details for FFSD08120A can be seen below.