Description
The MMCX Male to SMA Female Adapter is a specialized “between-series” RF component designed to provide a high-reliability transition between ultra-compact and standard microwave interfaces. It features an MMCX Plug (Male) on one side, utilizing a micro-miniature snap-on coupling mechanism with a protruding center pin, and an SMA Jack (Female) on the other, featuring a standard external threaded interface and internal socket.
This adapter is indispensable for engineers and technicians working with high-density wireless assemblies, such as IoT modules, GNSS receivers, and internal Wi-Fi cards, where an MMCX female port must be converted to a standard SMA interface for testing or antenna integration. The precision-machined design ensures a constant 50 Ohm impedance and is optimized for high-frequency performance. Constructed with a gold-plated brass body and PTFE (Teflon) insulation, it maintains exceptional signal integrity and low VSWR up to 6 GHz. The snap-on MMCX interface allows for 360-degree rotation, which significantly reduces mechanical stress on delicate PCB traces and micro-coaxial cables.
Key Technical Advantages
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Ultra-Miniature Transition: Enables a direct, low-loss connection between micro-scale internal hardware and standard-scale SMA external components.
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Stress-Reducing Rotation: The MMCX male interface allows the connected assembly to rotate 360 degrees, preventing cable kinking and reducing torque on sensitive internal connectors.
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Precision RF Shielding: The solid brass construction and gold plating provide a continuous ground path, ensuring excellent protection against EMI and RFI in sensitive high-frequency circuits.
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Compact & Lightweight: Its micro-profile is specifically designed for high-density electronic packaging and portable RF test kits where space is a premium.
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Maximum Conductivity: High-purity gold plating on all contact surfaces ensures ultra-low contact resistance and superior protection against oxidation.
Key Features
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MMCX Male to SMA Female Interface: Consists of an MMCX Plug (with center pin) and an SMA Jack (threaded socket with external threads).
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Gold-Plated Brass Construction: Offers maximum electrical performance and environmental resistance required for high-frequency microwave applications.
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Premium PTFE Dielectric: Offers high thermal stability and maintains consistent electrical performance across its frequency range.
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Industrial Durability: Rated for at least 500 mating cycles, ensuring long-term reliability for laboratory testing and product development.
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Standard 50 Ohm Impedance: Specifically engineered to match standard high-performance wireless communication and test instrumentation.
🔹 Applications
- RF signal interface between MMCX male and SMA female connectors
- Antenna and RF cable connections in wireless communication systems
- GPS, Wi-Fi, and IoT device connectivity
- RF coaxial cable assemblies and extensions
- Compact RF modules and embedded systems
- RF test and measurement equipment
- Signal routing in communication devices
- PCB-mounted RF applications and prototyping
- Industrial RF and communication networks
- General RF connectivity in high-frequency systems


Samay (verified owner) –
Really worth the price and the product quality is excellent. Packaging was secure and delivery was on time. Much better option for Indian customers instead of importing from outside India. Thank you AetherX!