The JAN1N5617 from Micross is a Space Qualified Diode with Dynamic Resistance 38 Degree C/W (Thermal), Forward Current 2 A, Forward Voltage 1.2 to 1.6 V, Reverse Current 0.5 to 55 uA (Leakage), Reverse Voltage 400 V. Tags: Axial-Lead. More details for JAN1N5617 can be seen below.