The RFN20NS6SFH from ROHM Semiconductor is a Power Diode with Forward Current 20 A, Forward Voltage 1.25 to 1.55 V, Reverse Current 0.05 to 10 uA, Reverse Voltage 600 V, Repetitive Peak Reverse Voltage 600 V. Tags: Surface Mount. More details for RFN20NS6SFH can be seen below.