The CFADC0403U5H from Cernex Inc is a Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 30±0.80 dB, Power 0.5 W, Attenuation Accuracy ±0.8 dB, Length 31.7 mm. Tags: Module with Connectors, Module with Connectors. More details for CFADC0403U5H can be seen below.