The LSIC2SD170B25 from Littelfuse is a Power Diode with Forward Current 25 to 70 A, Forward Voltage 1.5 to 2.2 V, Reverse Current 1 to 100 uA, Reverse Voltage 1700 V, Repetitive Peak Reverse Voltage 1700 V. Tags: Through Hole. More details for LSIC2SD170B25 can be seen below.