The HR1N4948 from Micross is a Space Qualified Diode with Forward Current 1 to 2 A, Forward Voltage 1.2 V, Reverse Current 0.5 to 25 uA, Reverse Voltage 1000 V, Non-Repetitive Peak Forward Current 25 A (surge). Tags: Axial-Lead. More details for HR1N4948 can be seen below.