This part is a kind of semiconductor called RCP890A05.

Function of this product has LTCC 5dB Directional Coupler.

Manufacturers : RN2 Technologies

Image and pinout :

Some of the text within the PDF file :

Specification For LTCC 5dB Directional Coupler Model Name : RCP890A05 Customer : Title: Name : APPROVED By Date : Signature : RN2 Technologies co., Ltd. RN2 Technologies co., Ltd. 284-2, Galgot-ri, Jinwe-myeon, Pyeongtaek-si, Kyunggi-do, KOREA Phone : (+82) 31 - 376 - 5400 FAX : (+82) 31 - 376 - 9151 Distributor: Shenzhen Jushou electronics Co., Ltd. 6F,building3,Sege science park, futian shenzhen Tel: 0086-0755-33128396 Mobile:0086-13632939545 Email: Fisher@jusdz.com Contact:Mr yu Rev.1 RCP890A05 LTCC Hybrid Coupler 2 / 15 1. Description 1-1. Part number: RCP890A05 Identification Mark. Model Name Signal Pad 2 GND Via Signal Via GND Via 1-2. Features - Directional Coupler 5dB - Surface mount type - Suitable for operation frequency 815 ~ 960MHz - RoHS compliance - High stability in [ ... ]

RCP890A05 PDF Datasheet Download