This part is a kind of semiconductor called B1603.

Function of this product has Low-Loss Filter.

Manufacturers : EPCOS

Image and pinout :

Some of the text within the PDF file :

SAW Components Data Sheet B1603 SAW Components Low-Loss Filter for Digital Television Data Sheet B1603 1220,0 MHz SMD ceramic package QCC8B Features s Low loss RF filter for up down conversion s Usable passband 8 MHz s No matching network required for operation at 200 Ω s Balanced to balanced operation s Ceramic package for Surface Mounted Technology (SMT) Terminals s Ni, gold-plated Dimensions in mm, approx. weight 0,07 g Pin configuration 1 2 5 6 3,7 4,8 Input Input Output Output To be grounded Case - ground Type B1603 Ordering code B39122-B1603-Z810 Marking and package according to C61157-A7-A46 Packing according to F61074-V8167-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range T Storage temperature range Tstg DC volt [ ... ]

B1603 PDF Datasheet Download