This part is a kind of semiconductor called ACB1608x-xxx.
Function of this product has (ACB Series) EMC Components.
Manufacturers : TDK
Image and pinout :

Some of the text within the PDF file :
9412_ACB (1/3) EMC Components Ferrite Beads SMD FEATURES • The ACB series provide effective EMC suppression in signal lines through simple in-series implementation. It is thus ideal for circuits in which it is difficult to bypass high-frequency components to ground. • Reflection components are highly suppressed through the use of a special ferrite material and an advanced internal structure that minimizes stray capacitance. This product is, therefore, an excelSHAPES AND DIMENSIONS/CIRCUIT DIAGRAM L ACB Series lent countermeasure for noise radiation in high-speed digital signal lines. • The ultra-miniature 1.6 × 0.8 mm part exhibits a 600Ω impedance at 100MHz, which is the larger type 2012. • Both the 1608 and 2012 types are available in a large number of impedance values. D [ ... ]
ACB1608x-xxx PDF Datasheet Download
