This part is a kind of semiconductor called B7741.

Function of this product has SAW Components.

Manufacturers : EPCOS

Image and pinout :

Some of the text within the PDF file :

SAW Components Data Sheet B7741 SAW Components Low-Loss Filter for Mobile Communication Data Sheet B7741 1960,0 MHz Chip sized SAW package DCS6K Features s Low-loss RF filter for mobile telephone s s s s s s PCS systems, receive path Low amplitude ripple Usable passband 60 MHz Unbalanced to balanced operation Impedance transformation from 50 Ω to 200 Ω Suitable for GPRS class 1 to 12 Package for Surface Mounted Technology (SMT) Terminals s Gold-plated Ni Dimensions in mm, approx. weight 0,012 g Pin configuration 2 1, 3 4, 6 1, 3, 5 Input, unbalanced Input ground Output, balanced To be grounded Type B7741 Ordering code B39202-B7741-C911 Marking and Package according to C61157-A7-A123 Packing according to F61074-V8153-Z000 Electrostatic Sensitive Device (E [ ... ]

B7741 PDF Datasheet Download