Our SMA Female Connector Cable Assemblies offer a crucial link in miniature radio frequency (RF) and microwave systems, providing secure, reliable mating for board- or panel-mounted devices. We pair the industry-standard SMA Female (jack) connector with a range of versatile coaxial cables—RG316, RG173, RG59, and LMR-200—allowing engineers and designers to precisely tailor their connectivity solution based on frequency, flexibility, and attenuation requirements. These assemblies are engineered for optimal 50-ohm (RG316, RG173, LMR-200) or 75-ohm (RG59) performance across various demanding applications.
Key Product Features and Technical Superiority
The SMA Female interface and the selection of high-quality cables ensure stable electrical performance and mechanical durability across a wide frequency spectrum.
SMA Female Connector Integrity
The SMA Female connector is a semi-precision, threaded connector widely adopted for its compact size, robust coupling, and excellent electrical performance up to 18 GHz and beyond. Unlike the male plug, the female connector is typically mounted on a device's panel or PCB. Its threaded interface provides a highly secure, vibration-resistant connection that minimizes accidental decoupling and maintains consistent impedance matching, crucial for high-frequency signal integrity.
The connectors are manufactured with precision-machined brass or stainless steel, often featuring gold plating on the center receptacle and insulator components to ensure minimal insertion loss, superior contact resistance, and long-term corrosion resistance. The quality of the female interface is paramount for the overall system performance, as it is often the fixed point of connection in the equipment.
Tailored Cable Selection for Every Requirement
We offer four distinct cable types to optimize for specific design needs, covering standard 50-ohm and specialized 75-ohm requirements:
RG316 (50-ohm, High-Temp): Featuring a PTFE (Polytetrafluoroethylene) jacket and dielectric, RG316 is the choice for high-temperature environments (up to +200°C) and applications requiring superior chemical and thermal stability. It offers excellent flexibility in a small diameter.
RG173 (50-ohm, Ultra-Flexible): A highly flexible, small-diameter cable, RG173 is suitable for applications requiring intricate routing and repeated bending. It is a cost-effective, general-purpose 50-ohm cable for short runs in benign environments. (Note: RG173 is less common today, often replaced by smaller cables like RG174 or specialized alternatives).
RG59 (75-ohm, Video/Telecom): This is the industry standard 75-ohm coaxial cable, primarily used for video signals, baseband video, and high-speed digital communications where 75-ohm impedance is required (e.g., HDTV, CATV). It is thicker than RG316, offering lower attenuation, particularly at moderate frequencies.
LMR-200 (50-ohm, Low-Loss): LMR-200 is a modern, low-loss alternative. It utilizes a solid polyethylene dielectric and multi-layer shielding to provide significantly lower attenuation than standard cables like RG316 or RG173, especially over medium to long runs, while retaining good flexibility. This cable is ideal for maximizing signal reach and power in high-frequency wireless applications.
Precision Termination and Electrical Integrity
Every cable assembly is professionally terminated to maintain a consistent impedance and maximize RF performance. The process includes precision stripping and controlled soldering/crimping techniques that minimize mechanical stress and electrical discontinuities at the SMA interface. This commitment to quality ensures a low VSWR and predictable, low-loss transmission characteristics across the specified frequency range for each cable type.
Practical Applications and Usage Scenarios
The versatility provided by the cable options allows these SMA Female assemblies to service a broad range of industries and systems.
Wireless Communications and IoT
The 50-ohm RG316 and LMR-200 assemblies are fundamental in modern wireless systems. They are used to connect external antennas to embedded radio modules in IoT gateways, cellular routers, Wi-Fi access points, and GPS trackers. The low-loss LMR-200 is preferred for antenna feedlines to minimize signal degradation, while the rugged RG316 is ideal for internal wiring in devices exposed to high ambient heat.
High-Definition Video and Broadcasting
The $\text{75-ohm}$ RG59 assemblies are essential in video broadcasting and professional AV equipment. They are used for routing Serial Digital Interface (SDI) and high-definition baseband video signals between cameras, monitors, distribution amplifiers, and routers, ensuring signal clarity and compliance with video standards.
Test and Measurement Prototyping
In R&D and electronics testing labs, the flexibility and high-frequency capabilities of the RG316/RG173 assemblies make them excellent for prototyping. They are frequently used as flexible interconnects between test fixtures, bench equipment, and devices under test (DUTs), where the space constraints of the SMA interface are necessary.
Aerospace and Defense
Due to its high-temperature tolerance and ruggedness, the RG316 assembly is a key component in aerospace and defense electronics, including radar systems, electronic warfare modules, and avionic communication systems, where performance stability under extreme environmental conditions is mandatory.
Why Choose Our SMA Female Assemblies? (SEO Focus)
Versatile Cable Selection: Choose from flexible, high-temperature (RG316), ultra-low-loss (LMR-200), or 75-ohm} video (RG59) cables.
High-Frequency SMA: Reliable, secure, threaded coupling ensures excellent performance up to 18 GHz.
Optimal 50-ohm and 75-ohm Matching: Solutions tailored for standard RF, microwave, and video applications.
Superior Signal Integrity: Professional termination ensures low VSWR and minimal insertion loss across all assemblies.
