The 1N3647 from Semtech is a Space Qualified Diode with Forward Current 0.6 to 0.26 A, Forward Voltage 5.00 V, Reverse Current 1.00 to 20.0 uA, Reverse Voltage 3000 V, Repetitive Peak Reverse Voltage 3000 V. Tags: Through Hole. More details for 1N3647 can be seen below.