The 353-255-XXX from Broadwave Technologies is a Fixed Attenuator with Frequency DC to 3 GHz, Attenuation 3 to 50 dB, Power 100 W, Attenuation Accuracy ±0.75 dB, ±1 dB, ±1.5 dB, ±1.8 dB, Operating Temperature -55 to 70 Degree C. Tags: Module with Connectors. More details for 353-255-XXX can be seen below.