This part is a kind of semiconductor called DC900P30.

Function of this product has Directional Coupler.

Manufacturers : Yantel

Image and pinout :

Some of the text within the PDF file :

Description The DC900P30 is a low profile, high performance 30dB directional coupler. It is designed for AMPS applications. This component is suitable for feed-forward amplifier and signal sampling circuits where low insertion loss, high directivity is required. It can be used in power applications up to 60 Watts. Parts have been subjected to rigorous qualification testing and they are using materials with coefficients fo thermal expansion(CTE) compatible with common substrates such as FR4, G-10, RF-35, RO4350B and polyimide. DC900P30 Directional Coupler Rev A0 Orientation Marker Part No. GND Signal Pad Features: ● 800-1000 MHz ● AMPS ● Low Insertion Loss ● Good Repeatability ● CTE compatible with FR4, G-10, RF-35, RO4350B and polyimide ● Immersion gold, prevent surface oxi [ ... ]

DC900P30 PDF Datasheet Download