SMA Plug for RG-405 Semi-Rigid Coax
It's a threaded, free-hanging (in-line) connector with a gold-plated stainless steel body and a PTFE dielectric. The 50 Ohm impedance and 18 GHz maximum frequency rating make it suitable for RF and microwave signal paths up through Ku-band. The center contact is beryllium copper with gold plating, and both the shield and contact terminate via solder.
This plug is built for RG-405 (.085" semi-rigid) cable — the most common hard-line coax for module-to-module interconnects in RF assemblies. No crimp tool needed; a soldering iron and a bit of practice is all it takes to terminate on site.
Mating and Mechanical Life
Threaded coupling (per the SMA interface standard) gives a positive mechanical lock — no vibration loosening. Rated for 500 mating cycles, which is solid for a connector that gets reconnected during bench testing or field service. The gold body and gold-plated center contact resist corrosion across those cycles.
Environmental Range
The PTFE dielectric holds stable impedance across that temperature swing — no dielectric constant drift to shift the 50 Ohm line.