The STPS40A45CHR from STMicroelectronics is a Power Diode with Forward Current 20 to 40 A, Forward Voltage 0.36 to 0.82 V, Reverse Current 4.0 to 25 uA, Repetitive Peak Reverse Voltage 45 V, Non-Repetitive Peak Forward Current 200 A. Tags: Through Hole. More details for STPS40A45CHR can be seen below.