The 9104-CRYO from API Technologies is a Cryogenic Fixed Attenuator that operates from DC to 40 GHz. It is available in attenuation configurations of 0, 3, 6, 10, 20, & 30 dB and offers stable attenuation over temperature. The attenuator can handle an average input power of 2 W and has a VSWR of less than 1.40:1. It uses APITech’s in-house resistor fabrication process and has been tested to a temperature of 4 mK. This RoHS-compliant attenuator offers low thermal noise characteristics, minimal self-heating with optimized non-magnetic material selection. It is available as a connectorized module with 2.92 mm Male/Female connectors.