The D1600U45X122 from Infineon Technologies is a Power Diode with Forward Current 1560 A, Reverse Current 150 mA, Repetitive Peak Reverse Voltage 4500 V, Non-Repetitive Peak Forward Current 28000 A, Temperature operating range 0 to +140 Degree C. Tags: Ceramic. More details for D1600U45X122 can be seen below.