The RF04UA2D from ROHM Semiconductor is a Power Diode with Forward Current 0.4 A, Forward Voltage 0.86 to 0.98 V, Reverse Current 0.01 to 10 uA, Reverse Voltage 200 V, Repetitive Peak Reverse Voltage 200 V. Tags: Surface Mount. More details for RF04UA2D can be seen below.