The SZ1SMB5944BT3G from onsemi is a Power Diode with Forward Current 0.006 A, Forward Voltage 58.9 to 65.1 V, Reverse Current 1 uA, Reverse Voltage 47.1 V, Repetitive Peak Reverse Voltage 47.1 V. Tags: Surface Mount. More details for SZ1SMB5944BT3G can be seen below.