The UJ3D1220K2 from UnitedSiC is a Power Diode with Forward Current 20 A, Forward Voltage 1.52 to 2.25 V, Reverse Current 18 to 500 uA, Reverse Voltage 1200 V, Repetitive Peak Reverse Voltage 1200 V. Tags: Through Hole. More details for UJ3D1220K2 can be seen below.