The 33 Series from Smiths Interconnect is a Space Qualified Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 1 to 30 dB, Power 10 to 400 W, Attenuation Accuracy ±0.5 to 1 dB, Operating Temperature -55 to 150 Degree C. Tags: Surface Mount, Flange Attenuator. More details for 33 Series can be seen below.