The 374-306-XXX from Broadwave Technologies is a Fixed Attenuator with Frequency DC to 3 GHz, Attenuation 1 to 40 dB, Power 1 W, Attenuation Accuracy ±0.75 dB, ±1 dB, Operating Temperature -55 to 100 Degree C. Tags: Module with Connectors. More details for 374-306-XXX can be seen below.