The 9102-CRYO from Spectrum Control is a Cryogenic Attenuator that operates from DC to 18 GHz. It is available in standard attenuation values of 0, 3, 6, 10 and 20 dB and has a VSWR of less than 1.45:1. The attenuator can handle an input power of 2 W and has an operating temperature range from 4° mK (-273°C) to +125°C. It provides stable attenuation over temperature with low thermal noise characteristics and minimal self-heating. This attenuator is available in a package that is based on non-magnetic materials. It measures 25.15 x 7.9 mm and has SMA connectors.