The 1N4947 from Semtech is a Power Diode with Forward Current 1.0 to 2.0 A, Forward Voltage 1.2 V, Reverse Current 0.5 to 25 uA, Reverse Voltage 800 V, Repetitive Peak Reverse Voltage 800 V. Tags: Through Hole. More details for 1N4947 can be seen below.