This part is a kind of semiconductor called B4030.

Function of this product has SAW Components.

Manufacturers : EPCOS

Image and pinout :

Some of the text within the PDF file :

SAW Components Data Sheet B 4030 SAW Components Low Loss Filter Data Sheet B 4030 919,55 MHz Ceramic package QCC8B Features Low-loss IF filter for DAB Low insertion attenuation High image frequency suppression No matching network required for operation at 50 Ω s Package for Surface Mounted Technology (SMT) s Hermetically sealed ceramic SMD package s s s s Terminals s Ni, gold-plated Dimensions in mm, approx. weight 0.07 g Pin configuration 2 3 6 7 4,8 1,5 Input Balanced Input Output Balanced Output Case - ground To be grounded Type B4030 Ordering code B39921-B4030-Z810 Marking and Package according to C61157-A7-A46 Packing according to F61074-V8037-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature rang [ ... ]

B4030 PDF Datasheet Download