The LNF-CIC8_12A from Low Noise Factory is a Cryogenic Circulator that operates from 8 to 12 GHz. It provides isolation of 20 dB, has an insertion loss of 0.2 dB, and a port match of 20 dB. The circulator requires a DC supply from -50 to +50 V and has an RF drive level of 30 dBm. The gold plated OFHC copper body ensures minimum loss and has been designed to meet the strict requirements of ultra-low temperature physics research. It is available in a module that measures 191.0 x 20.6 x 10.2 mm and has SMA connectors.