The MSC2X51SDA120J from Microchip Technology is a Power Diode with Forward Current 50 A, Forward Voltage 1.5 to 2.1 V, Reverse Current 15 to 250 uA, Reverse Voltage 1200 V, Repetitive Peak Reverse Voltage 1200 V. Tags: Surface Mount. More details for MSC2X51SDA120J can be seen below.