SMA Plug for RG-402 Semi-Rigid Cable — 18 GHz, 50 Ohm
The Amphenol RF 901-9808 is an SMA plug, male pin connector designed for RG-402 (.141" semi-rigid) cable. The connector uses a threaded coupling for secure mating, with a gold-plated beryllium copper center contact and a stainless steel body finished in gold and passivated. This is a single-port, free-hanging (in-line) plug intended for permanent or semi-permanent cable assembly termination.
Cable Compatibility — Designed for RG-402
This connector is explicitly specified for RG-402 (.141" semi-rigid) cable. The cable group designation means the body dimensions, center contact capture, and dielectric support are sized for that specific outer diameter and center conductor. If you are working with RG-405 (.085" semi-rigid), the sibling 901-9867-RFX is the correct choice — the body and ferrule are scaled down for the smaller cable. No special tooling beyond standard SMA crimp or solder tooling is required for installation; the contact and shield are both solder-terminated.
The threaded fastening type ensures the mated pair stays tight under vibration — the coupling nut won't back off like a push-on connector might.
The stainless steel body with gold and passivated finish provides corrosion resistance in humid or salt-fog environments. The connector is RoHS compliant per Amphenol RF standard practice, though no separate cert number is listed in this record.