The MSC2X31SDA170J from Microchip Technology is a Power Diode with Forward Current 30 A, Forward Voltage 1.5 to 2.3 V, Reverse Current 4 to 200 uA, Reverse Voltage 1700 V, Repetitive Peak Reverse Voltage 1700 V. Tags: Surface Mount. More details for MSC2X31SDA170J can be seen below.