The HMC655 from Analog Devices is a Fixed Attenuator with Frequency DC to 50 GHz, Attenuation 6 dB, Power 0.39 W, 25.91 dBm, Attenuation Accuracy ±0.2 dB, Operating Temperature -55 to 85 Degree C. Tags: Die. More details for HMC655 can be seen below.