The SMG30 from MACOM is a RF Variable Attenuator with Frequency 100 to 2000 MHz, Attenuation Range 27 to 50 dB, Peak Power 1 W, Insertion Loss 2.1 to 3.8 dB, Switching Time 0.2 to 3 dB. Tags: Surface Mount, Voltage Controlled. More details for SMG30 can be seen below.