The D3501N42T from Infineon Technologies is a Power Diode with Forward Current 3470 A, Reverse Current 100 mA, Repetitive Peak Reverse Voltage 3200 to 4200 V, Non-Repetitive Peak Forward Current 63000 A, Temperature operating range -40 to +160 Degree C. Tags: Ceramic. More details for D3501N42T can be seen below.