The SDS120J030H3 from Sanan IC is a RF Schottky Diode with Peak Reverse Voltage 1200 V, Forward continuous Current 30000 mA, Forward Voltage 1.45 to 2.25 V, Current Surge Peak 240 A (Non-Repetitive), Current 80 uA (Reverse). Tags: Schottky Barrier Diode (SBD). More details for SDS120J030H3 can be seen below.