The TE Connectivity 2385345-1 is a between-series RF adapter that converts from a 1.0mm plug, male pin interface to a 1.35mm jack, female socket. It is a straight, in-line adapter built for precision mmWave signal paths up to 90 GHz. The stainless steel body and gold-plated beryllium copper centre contacts are paired with a PEEK dielectric, giving it the mechanical and electrical stability needed at these frequencies. Rated for 500 mating cycles and a -55°C to 125°C operating range, it is suited for test bench, instrumentation, and R&D environments where a 1.0mm VNA port needs to connect to a 1.35mm cable assembly or device under test.
The 50 Ohm impedance matches the standard for most RF test equipment and microwave systems — no impedance transformation is happening inside this adapter, it is a straight-through barrel. The 90 GHz bandwidth covers K-band, Ka-band, and the lower mmWave spectrum used in 5G over-the-air testing and automotive radar development. The threaded fastening on both ends gives a secure, repeatable connection that does not rely on a snap-on detent, which matters when the adapter is part of a calibrated test setup where torque repeatability affects phase stability. Beryllium copper was chosen for the centre contacts because it maintains spring force over the 500-cycle rated life without taking a permanent set — important in a test adapter that gets swapped between instruments regularly. PEEK as the dielectric material has a low dissipation factor at high frequencies, so the adapter does not introduce significant loss of its own into the path.