The IDWD40G120C5 from Infineon Technologies is a Power Diode with Forward Current 40 A, Forward Voltage 1.4 V, Reverse Current 0.023 to 0.332 mA, Repetitive Peak Reverse Voltage 1200 V, Non-Repetitive Peak Forward Current 290 A. Tags: Through Hole. More details for IDWD40G120C5 can be seen below.