The AXXXX-150-10Y Series from Barry Industries are BeO Flanged Attenuators that operate from DC to 6 GHz. The attenuators can be configured to have a fixed attenuation from 0 to 20 dB and can handle up to 150 W of input power. They are available in a flange mount package and operate over a temperature range from -55 to 150 degree celcius.
