The F04-B0420-01 from SRTechnology Corporate is a Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 20 dB, Power 2 W, Attenuation Accuracy ± 0.55 dB, Operating Temperature -65 to 85 Degree C. Tags: Module with Connectors. More details for F04-B0420-01 can be seen below.