The PRF-AT22518-XX from Premier RF is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 3, 6, 10, 20, 30, 40 dB, Power 25 W, Peak Power 500 W, Attenuation Accuracy ±0.3 to 1.5 dB. Tags: Module with Connectors. More details for PRF-AT22518-XX can be seen below.