The ZFA2B-4MF-YA from ZTS Technologies is a Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 1 to 30 dB, Power 2 W, Operating Temperature -55 to 125 Degree C, Temperature Coefficient <0.0004 dB/dB/Degree C. Tags: Module with Connectors. More details for ZFA2B-4MF-YA can be seen below.