The JANS1N6391 from Microchip Technology is a Power Diode with Forward Current 0.0015 to 0.22 A, Forward Voltage 0.50 to 0.68 V, Reverse Voltage 45 V, Repetitive Peak Reverse Voltage 54 V, Non-Repetitive Peak Forward Current 600 A. Tags: Stud Mount. More details for JANS1N6391 can be seen below.