SMA Jack for RG-405 Semi-Rigid Coax
It is a 50 Ohm impedance connector rated to 27 GHz, with a threaded coupling for secure mated retention. The brass body carries a gold finish, and the beryllium copper centre contact is gold-plated — a combination that delivers consistent RF performance across the band and resists corrosion in field-service environments.
Frequency and Signal Integrity
Rated to 27 GHz maximum frequency, this jack covers the full Ku-band and well into K-band, making it suitable for microwave test points, antenna feeds, and high-speed digital backplanes where the signal path must stay within a 50 Ohm environment. The solder shield termination — rather than a crimp or clamp — gives a low-inductance ground return at the cable braid, which is critical for maintaining consistent impedance through the transition from cable to connector.
This jack is built for RG-405 (.086 inch semi-rigid) cable — the same family used in phase-stable assemblies for test equipment and microwave modules.
For a threaded SMA, 500 cycles is a standard endurance figure — sufficient for production test racks and field-swappable modules, though a lab environment with daily reconnections will eventually reach end-of-life on the threads before the contacts degrade.