The MBR4045PT from Vishay is a Power Diode with Forward Current 40 A, Forward Voltage 0.60 to 0.80 V, Reverse Current 1.0 to 100 mA, Repetitive Peak Reverse Voltage 45 V, Non-Repetitive Peak Forward Current 400 A. Tags: Through Hole. More details for MBR4045PT can be seen below.