This part is a kind of semiconductor called AM1.

Function of this product has High Dynamic Range Gain Block.

Manufacturers : WJ Communication

Image and pinout :

Some of the text within the PDF file :

High Dynamic Range Gain Block AM1 The Communications Edge TM Product Information Product Features x x x x x x x 60 – 3000 MHz 14 dB Gain 2.4 dB Noise Figure +39 dBm OIP3 Single +3.3 or +4.5 Supply Internally matched to 50 : Lead-free/Green/RoHScompliant SOT-89 Package x MTTF > 1000 years Product Description The AM1 is a general-purpose gain block that offers good dynamic range and low noise figure in a low-cost surfacemount package. The combination of near-constant OIP3 and low noise figure performance over frequency makes it attractive for both narrowband and broadband applications. The device combines dependable performance with superb quality to maintain MTTF values exceeding 1000 years at mounting temperatures of +85 qC and is available in the environmentally [ ... ]

AM1 PDF Datasheet Download