The ZFA20N-18B-YA from ZTS Technologies is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 1 to 40 dB, Power 20 W, Peak Power 1 kW, Operating Temperature -55 to 125 Degree C. Tags: Module with Connectors. More details for ZFA20N-18B-YA can be seen below.