The FAC4325 from Yantel Corporation is a Fixed Attenuator with Frequency DC to 43.5 GHz, Attenuation 25 dB, Power 0.8 to 1 W, Attenuation Accuracy ±0.25 to ±0.45 dB, Operating Temperature -45 to 85 Degree C. Tags: Die, Chip, Surface Mount. More details for FAC4325 can be seen below.