The LNF-ISC8_12A from Low Noise Factory is an ultra-low insertion loss cryogenic isolator that operates from 8 to 12 GHz. It provides isolation of 20 dB and insertion loss of 0.2 dB. The isolator has been designed to meet the strict requirements of ultra-low temperature physics research. The isolator is available as a slim coaxial module that measures 19.1 x 20.6 x 10.2 mm with SMA connectors.