The JAN1N5804 from Micross is a Space Qualified Diode with Forward Current 1.3 to 3.3 A, Forward Voltage 0.875 V, Reverse Current 1 to 50 uA, Reverse Voltage 100 V, Repetitive Peak Reverse Voltage 100 V. Tags: Axial-Lead. More details for JAN1N5804 can be seen below.