This part is a kind of semiconductor called MB6FU.

Function of this product has 1.0A SCHOTTKY BRIDGE RECTIFIER.

Manufacturers : UTC

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD MB6FU SCHOTTKY BRIDGE 1.0A SCHOTTKY BRIDGE RECTIFIER  DESCRIPTION The UTC MB6FU is a schottky bridge rectifiers, it uses UTC’s advanced technology to provide customers with high surge current capability, etc. The UTC MB6FU is suitable for General purpose use in ac-to-dc bridge full wave rectification for LED bulb and telecommunication.  FEATURES * Low leakage * Surge overload rating-30A peak * Designed for Surface Mount Application  SYMBOL + MBF  ORDERING INFORMATION Ordering Number MB6FUL-MBF-R Package MBF Packing Tape Reel  MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 4 QW-R202-039.A MB6FU SCHOTTKY BRIDGE  ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise noted) Single phase, half wa [ ... ]

MB6FU PDF Datasheet Download