The 351-278-XXX from Broadwave Technologies is a Fixed Attenuator with Frequency DC to 1 GHz, Attenuation 1 to 40 dB, Power 50 W, Peak Power 1 kW, Attenuation Accuracy ±1 dB, ±1.5 dB. Tags: Module with Connectors. More details for 351-278-XXX can be seen below.