This part is a kind of semiconductor called B230.

Function of this product has 2.0A SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER.

Manufacturers : Diodes Incorporated

Image and pinout :

Some of the text within the PDF file :

Green B220/A - B260/A 2.0A SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER Features • Guard Ring Die Construction for Transient Protection • Ideally Suited for Automated Assembly • Low Power Loss, High Efficiency • Surge Overload Rating to 50A Peak • For Use in Low Voltage, High Frequency Inverters, Free Wheeling, and Polarity Protection Application • High Temperature Soldering: 260°C/10 Second at Terminal • Lead Free Finish/RoHS Compliant (Note 1) • Green Molding Compound (No Halogen and Antimony) (Note 2) • Qualified to AEC-Q101 Standards for High Reliability Mechanical Data • Case: SMA/SMB • Case Material: Molded Plastic. UL Flammability Classification Rating 94V-0 • Moisture Sensitivity: Level 1 per J-STD-020 • Terminals: Lead Free Plating (Matte Tin Finish). [ ... ]

B230 PDF Datasheet Download