The C4D10120D from Wolfspeed is a Power Diode with Forward Current 18 A, Forward Voltage 1.4 to 3 V, Reverse Current 300 uA, Repetitive Peak Reverse Voltage 1200 V, Non-Repetitive Peak Forward Current 36 to 400 A. Tags: Through Hole. More details for C4D10120D can be seen below.