The JANS1N6620US from Sensitron Semiconductors is a Space Qualified Diode with Forward Voltage 12 to 30 V, Reverse Current 0.5 to 1.0 uA, Non-Repetitive Peak Forward Current 15 to 20 A, Recovery Time 30 to 60 ns, Temperature operating range -65 to 175 Degree C. More details for JANS1N6620US can be seen below.