The JANS1N6643 from Microchip Technology is a Power Diode with Forward Current 0.01 to 0.1 A, Forward Voltage 0.8 to 1.2 V, Reverse Current 75 to 100 uA, Reverse Voltage 0 to 1.5 V, Repetitive Peak Reverse Voltage 50 V. Tags: Through Hole. More details for JANS1N6643 can be seen below.