The JANS1N3595-1 from Sensitron Semiconductors is a Space Qualified Diode with Forward Voltage 0.52 to 1 V, Reverse Current 1 to 3 nA, Non-Repetitive Peak Forward Current 500 mA, Temperature operating range -65 to 175 Degree C. More details for JANS1N3595-1 can be seen below.