The SDS120J005D2 from Sanan IC is a RF Schottky Diode with Peak Reverse Voltage 1200 V (Surge Peak), Forward continuous Current 5000 to 17000 mA, Forward Voltage 1.40 to 2.70 V, Current Surge Peak 55 A (Non-Repetitive), Current 1 to 100 uA (Reverse). Tags: Surface Mount, Schottky Barrier Diode (SBD). More details for SDS120J005D2 can be seen below.