The 1N4756A from onsemi is a Power Diode with Forward Current 0.0055 A, Forward Voltage 44.65 to 49.35 V, Reverse Current 5 uA, Reverse Voltage 35.8 V, Repetitive Peak Reverse Voltage 35.8 V. Tags: Through Hole. More details for 1N4756A can be seen below.