The 1N4748A from onsemi is a Power Diode with Forward Current 0.0115 A, Forward Voltage 20.9 to 23.1 V, Reverse Current 5 uA, Reverse Voltage 16.7 V, Repetitive Peak Reverse Voltage 16.7 V. Tags: Through Hole. More details for 1N4748A can be seen below.