The RB522FS-30 from ROHM Semiconductor is a Power Diode with Forward Current 0.1 A, Forward Voltage 0.29 to 0.37 V, Reverse Current 2.8 to 7 uA, Reverse Voltage 30 V, Repetitive Peak Reverse Voltage 30 V. Tags: Surface Mount. More details for RB522FS-30 can be seen below.