The RB521S-30 is a single Schottky barrier diode that is ROHS compliant and manufactured by TWGMC. The diode has a current rating of 30uA at 10 Volts, with a maximum peak voltage rating of 30 Volts. The diode also has a maximum reverse current rating of 500 mA at 200 mA. The diode is packaged in a SOD-523 package.