The 1SMB5919BT3G from onsemi is a Power Diode with Forward Current 0.0669 A, Forward Voltage 5.32 to 5.88 V, Reverse Current 5 uA, Reverse Voltage 3 V, Repetitive Peak Reverse Voltage 3 V. Tags: Surface Mount. More details for 1SMB5919BT3G can be seen below.