This part is a kind of semiconductor called B180B.

Function of this product has 1.0A SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER.

Manufacturers : Diodes Incorporated

Image and pinout :

Some of the text within the PDF file :

Green B170/B - B1100/B 1.0A HIGH VOLTAGE SCHOTTKY BARRIER RECTIFIER Product Summary (@ +25°C) B170/B VRRM (V) 70 IO (A) 1.0 VF Max (V) 0.79 B180/B VRRM (V) 80 IO (A) 1.0 VF Max (V) 0.79 B190/B VRRM (V) 90 IO (A) 1.0 VF Max (V) 0.79 B1100/B VRRM (V) 100 IO (A) 1.0 VF Max (V) 0.79 IR Max (mA) 0.5 IR Max (mA) 0.5 IR Max (mA) 0.5 IR Max (mA) 0.5 Features and Benefits  Guard Ring Die Construction for Transient Protection  Ideally Suited for Automated Assembly  Low Power Loss, High Efficiency  Surge Overload Rating to 125A Peak  For Use in Low Voltage Drop, High Frequency Inverters, Free Wheeling, and Polarity Protection Application  High Temperature Soldering: +260°C/10 Second at Terminal  Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antim [ ... ]

B180B PDF Datasheet Download