The AB18W50-xx from Atlantic Microwave is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 3, 6, 10, 20, 30, 40 dB, Power 50 W, Peak Power 500 W, Attenuation Accuracy ±0.75-1.50 dB. Tags: Module with Connectors. More details for AB18W50-xx can be seen below.