This part is a kind of semiconductor called ACMD-6103.

Function of this product has Band 3 Duplexer.

Manufacturers : AVAGO

Image and pinout :

Some of the text within the PDF file :

ACMD-6103 Band 3 Duplexer Data Sheet Description The Avago Technologies ACMD-6103 is a highly miniaturized duplexer designed for use in LTE Band 3 (1710 – 1785 MHz UL, 1805 – 1880 MHz DL) handsets and mobile data terminals. Low Insertion Loss in the Tx channel minimizes current drain from the power amplifier, while low Rx channel Insertion Loss improves receiver sensitivity. The ACMD-6103 enhances the sensitivity and dynamic range of handset receivers by providing high isolation of the transmitted signal from the receiver input and high rejection of transmit-generated noise in the receive band. The ACMD-6103 is designed with Avago’s innovative Film Bulk Acoustic Resonator (FBAR) technology, which makes possible ultra-small, high-Q filters at a fraction of their usual size. The excel [ ... ]

ACMD-6103 PDF Datasheet Download