The UJ3D1220KSD from UnitedSiC is a Power Diode with Forward Current 10 to 20 A, Forward Voltage 1.4 to 2.6 V, Reverse Current 10 to 900 uA, Reverse Voltage 1200 V, Repetitive Peak Reverse Voltage 1200 V. Tags: Through Hole. More details for UJ3D1220KSD can be seen below.