Description
The MMCX (Micro-Miniature Coaxial) female PCB connector is a high-performance RF component valued for its exceptionally small footprint and its ability to provide a secure, rotatable connection in space-constrained environments. This specific variant is designed without stand-offs, meaning the connector body sits flush against the printed circuit board. This design is specialized for applications with extreme vertical height restrictions, ensuring the lowest profile transition from the PCB to the mating MMCX plug.
Designed for through-hole solder mounting, this connector features precision-machined legs and a center contact sleeve that provide a high-strength mechanical bond and a direct electrical path to the board’s circuitry. The snap-on coupling mechanism allows for quick, tool-less mating and 360-degree rotation of the mated plug, which is essential for relieving mechanical stress on the solder joints. Manufactured with a gold-plated brass body and premium PTFE (Teflon) insulation, it delivers consistent 50-Ohm performance and reliable operation up to 6 GHz.
Key Technical Advantages
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Ultra-Low Profile Flush Mount: The “no stand-off” design allows the connector to sit directly on the PCB, minimizing vertical height for the slimmest possible electronic assemblies.
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Micro-Miniature Snap-On Design: The ultra-compact interface enables high-density packaging on PCBs where traditional threaded connectors or connectors with mounting stand-offs are too bulky.
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Superior Mechanical Stability: Features a 4-leg or multi-leg through-hole design that provides a robust mechanical anchor to the board, resisting pull-off forces during mating and unmating.
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Low VSWR Performance: Precision-machined internal components and gold-plated surfaces ensure minimal signal reflection and low insertion loss across microwave frequencies.
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Gold-Plated Durability: Features heavy gold plating on the body and center contact to maintain excellent solderability, low contact resistance, and long-term protection against oxidation.
Key Features
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Interface Type: MMCX Female (Jack) with snap-on coupling mechanism.
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Mounting Type: PCB Mount (Through-Hole).
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Base Design: Flush Mount (Without Stand-offs/Washers).
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Termination Method: Solder (Legs and Center Contact).
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Premium Construction: Features a gold-plated brass body and high-performance PTFE dielectric.
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Common Application: Slim Wi-Fi modules, low-profile GPS receivers, cellular IoT devices, and high-density internal PCB-to-antenna signal routing.
🔹 Applications:
- PCB-mounted RF interfaces
- Embedded systems
- Wireless communication modules
- Signal routing
- Antenna integration
- IoT devices


Ankur Raj (verified owner) –
Product quality feels premium and genuine. Really good experience with AetherX.
Seema Gautam (verified owner) –
Fast delivery, proper packaging, and excellent RF product quality. Will definitely order again.