The HG166SB-2 from Microarray Technologies Corporation is a RF Variable Attenuator with Frequency DC to 18 GHz, Attenuation Range 31.5 dB, Attenuation Accuracy -0.5 to 1.5 dB, Power 0.5 W, Insertion Loss 2.5 dB. Tags: Surface Mount, Digital, Voltage Controlled. More details for HG166SB-2 can be seen below.