The RBQ30TB45BNZ from ROHM Semiconductor is a Power Diode with Forward Current 30 A, Forward Voltage 0.53 to 0.59 V, Reverse Current 100 to 350 uA, Reverse Voltage 45 V, Repetitive Peak Reverse Voltage 45 V. Tags: Through Hole. More details for RBQ30TB45BNZ can be seen below.