The QMC-CRYOATT-03NM from Quantum Microwave is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 3 dB, Power 0.1 W, Attenuation Accuracy ±0.5 dB, Insertion Loss 0.5 dB. Tags: Module with Connectors, Cryogenic Attenuator. More details for QMC-CRYOATT-03NM can be seen below.