SMA Male to UHF Female Adapter

Description

The SMA Male to UHF Female Adapter is a specialized “between-series” RF component designed to provide a high-reliability transition between the ubiquitous compact SMA standard and the traditional large-format UHF interface. It features an SMA Plug (Male) on one side, utilizing a standard fine-threaded coupling nut and center pin, and a UHF Jack (Female/SO-239) on the other, featuring a rugged threaded external housing and internal socket.

This adapter is indispensable for engineers and radio operators who need to connect UHF male (PL-259) cable assemblies-commonly used in VHF/UHF radio and maritime communications-to SMA female ports found on handheld transceivers, SDR (Software Defined Radio) dongles, and modern microwave modules. While the SMA interface is rated for precision high-frequency performance, the UHF side provides a robust connection for high-power applications typically below 300 MHz. Constructed with a heavy-duty nickel-plated brass body and PTFE (Teflon) insulation, it ensures a secure mechanical and electrical link in both field and laboratory environments.

Key Technical Advantages

• Interface Bridging: Enables the direct connection of traditional UHF cable assemblies to modern, high-precision SMA instrumentation and compact radios.

• Rugged Mechanical Stability: The solid brass construction and threaded interfaces are designed to withstand the physical stress and torque associated with standard mobile and base station installations.

• Superior RF Shielding: The solid metal housing provides a continuous ground path, ensuring stable performance and protecting against EMI and signal leakage in high-power environments.

• Precision-Machined Threads: Features high-quality threading on both interfaces to ensure smooth, secure connections and prevent port damage during high-frequency use.

• Maximum Conductivity: High-purity gold or silver plating on the internal center contact pin and socket ensures ultra-low contact resistance and superior protection against oxidation.

Key Features

• SMA Male to UHF Female Interface: Consists of an SMA Plug (with center pin and hex coupling nut) and a UHF Jack (SO-239 with socket and external threads).

• Nickel-Plated Brass Construction: Offers superior corrosion resistance and professional-grade durability for indoor and outdoor RF applications.

• Premium PTFE Dielectric: Provides high thermal stability and maintains consistent electrical performance across its operating range.

• Industrial Durability: Rated for at least 500 mating cycles, ensuring long-term reliability in laboratory, mobile, and field settings.

• Standard Compatibility: Fully compatible with all standard SO-239 (UHF Female) ports and SMA Female connectors.

Technical Summary