The 351-255-XXX from Broadwave Technologies is a Fixed Attenuator with Frequency DC to 3 GHz, Attenuation 3 to 40 dB, Power 100 W, Peak Power 1 kW, Attenuation Accuracy ±0.75 dB, ±1 dB, ±1.5 dB. Tags: Module with Connectors. More details for 351-255-XXX can be seen below.