This is an 0805J1K00470JKT Multilayer Ceramic Capacitor, or MLCC, manufactured by Knowles. The MLCC is an SMD/SMT component in the 0805 package size and has a capacitance of 47pF and a voltage rating of 1kV. This MLCC is also RoHS compliant. The 0805J1K00470JKT is commonly used for blocking, bypassing, decoupling, filtering, and timing applications.