The HG166SE from Microarray Technologies Corporation is a RF Variable Attenuator with Frequency DC to 18 GHz, Attenuation Range 15.75 dB, Attenuation Accuracy -0.2 to 5 dB, Power 0.5 W, Insertion Loss 3 dB. Tags: Surface Mount, Digital, Voltage Controlled. More details for HG166SE can be seen below.