The 1N5553US from Semtech is a Space Qualified Diode with Forward Current 3.0 to 5.0 A, Forward Voltage 1.0 V, Reverse Current 1.0 to 60 uA, Reverse Voltage 800 V, Repetitive Peak Reverse Voltage 800 V. Tags: Through Hole. More details for 1N5553US can be seen below.