This part is a kind of semiconductor called B5050.

Function of this product has SAW Components.

Manufacturers : EPCOS

Image and pinout :

Some of the text within the PDF file :

SAW Components SAW IF filter cdma2000 Series/type: Ordering code: Date: Version: B5050 B39880-B5050-H810 Mar 16, 2007 2.0 © EPCOS AG 2007. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information contained therein without EPCOS’ prior express consent is prohibited. SAW Components SAW IF filter Data Sheet Application s Low-loss IF filter for cdma2000 base station s Unbalanced or balanced operation possible s Usable passband 3.78 MHz B5050 88.5 MHz Features Package size 7.0 x 5.0 x 1.33 mm3 Package code QCC12E RoHS compatible Approx. weight 0.2 g Ceramic package for Surface Mount Technology (SMT) s Ni, gold-plated terminals s Electrostatic Sensitive Device (ESD) s Filter surface passivated s s s s s 1,27 1,27 1 2 3 4 [ ... ]

B5050 PDF Datasheet Download