The 135F-135F+ from Mini-Circuits is a 1.35 mm (female) to 1.35 mm (female) Coaxial Adapter that operates from DC to 90 GHz. It has an insertion loss of less than 0.66 dB and a VSWR of better than 1.28:1. This straight adapter is available in a passivated stainless-steel package that measures 6.0 (Dia.) x 17.6 (L) mm and has an operating temperature range of -55°C to +100°C.