The 1N4944 from Semtech is a Space Qualified Diode with Forward Current 1.0 to 2.0 A, Forward Voltage 1.2 V, Reverse Current 0.5 to 25 uA, Reverse Voltage 400 V, Repetitive Peak Reverse Voltage 400 V. Tags: Through Hole. More details for 1N4944 can be seen below.