The 1N5820 from Vishay is a Power Diode with Forward Current 3.0 A, Forward Voltage 0.475 to 0.950 V, Reverse Current 2.0 to 20 mA, Repetitive Peak Reverse Voltage 20 V, Non-Repetitive Peak Forward Current 80 A. Tags: Through Hole. More details for 1N5820 can be seen below.