The STF-06S1-M from ERAVANT is a Miniature Faraday Isolator that operates from 110 to 170 GHz. It can handle up to 0.1 W of CW input power, has an insertion loss of 3 dB, and provides isolation of 23 dB. This mini-isolator utilizes a novel magnetic design that has a precision machined housing with stable and resistant performance in the presence of external stray magnetic fields. It is available in a robust package that measures 0.75 × 0.75 × 0.55 inches and has WR-06 waveguides with UG-387/U-M anti-cocking flanges input and output ports. The isolator is ideal for use in applications such as test labs, instrumentation, and sub-assemblies.