The JANS1N5552US from Microchip Technology is a Power Diode with Forward Voltage 0.6 to 1 V, Reverse Current 1 uA, Repetitive Peak Reverse Voltage 660 V, Non-Repetitive Peak Forward Current 100 A, Recovery Time 2000 ns. Tags: Stud Mount. More details for JANS1N5552US can be seen below.