The FAT0603S5 from Yantel Corporation is a Fixed Attenuator with Frequency DC to 6 GHz, Attenuation 3 dB, Power 5 W, Attenuation Accuracy ±0.35 dB, Operating Temperature -55 to 125 Dergee C. Tags: Module with Connectors. More details for FAT0603S5 can be seen below.