The RB520S-30DP from Micro Commercial Components is a RF Schottky Diode with Peak Reverse Voltage 30 V, Forward continuous Current 100 mA, Current Surge Peak 500 mA, Power Dissipation 100 mW, Capacitance 3.5 to 7 pF. Tags: Surface Mount. More details for RB520S-30DP can be seen below.