The RBQ20NS45AFH from ROHM Semiconductor is a Power Diode with Forward Current 20 A, Forward Voltage 0.54 to 0.65 V, Reverse Current 15 to 140 uA, Reverse Voltage 45 V, Repetitive Peak Reverse Voltage 45 V. Tags: Surface Mount. More details for RBQ20NS45AFH can be seen below.