The BYG20D from Vishay is a Power Diode with Forward Current 1.5 A, Forward Voltage 1.3 to 1.4 V, Reverse Current 0.001 to 0.01 mA, Repetitive Peak Reverse Voltage 200 V, Non-Repetitive Peak Forward Current 30 A. Tags: Surface Mount. More details for BYG20D can be seen below.