The FAC4320 from Yantel Corporation is a Fixed Attenuator with Frequency DC to 43.5 GHz, Attenuation 20 dB, Power 0.6 to 0.8 W, Attenuation Accuracy ±0.2 to ±0.5 dB, Operating Temperature -45 to 85 Degree C. Tags: Die, Chip, Surface Mount. More details for FAC4320 can be seen below.