The SZ1SMB5946BT3G from onsemi is a Power Diode with Forward Current 0.005 A, Forward Voltage 71.25 to 78.75 V, Reverse Current 1 uA, Reverse Voltage 56 V, Repetitive Peak Reverse Voltage 56 V. Tags: Surface Mount. More details for SZ1SMB5946BT3G can be seen below.