Description
The SMA Female 4-Hole Panel Mount Connector is a precision RF interface engineered for installations requiring maximum mechanical stability. Unlike single-nut bulkhead connectors, the 4-hole square flange allows the connector to be bolted directly to a chassis or panel using four screws. This design prevents rotation and movement, even when subjected to the high torque of frequent antenna or cable mating.
This connector features a solder-cup or tab terminal, making it ideal for custom internal wiring. It is widely used in RF shielding boxes, wireless base stations, and laboratory instruments where maintaining a consistent ground and low signal loss is critical. The robust construction and gold-plated finish ensure superior conductivity and long-term protection against environmental oxidation across frequencies up to 18 GHz.
Key Technical Advantages
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Enhanced Mechanical Stability: The 4-hole flange distributes physical stress across a larger surface area, providing excellent resistance to vibration and physical impact.
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Superior Grounding: Flush mounting against a metal chassis ensures a broad, low-resistance ground connection, which is essential for minimizing EMI/RFI.
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Low VSWR Performance: Precision-machined to maintain a strict 50 Ohm impedance, ensuring high signal integrity and minimal insertion loss in microwave signal paths.
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Anti-Rotation Design: Once bolted down, the connector cannot spin or loosen, protecting internal solder joints from mechanical fatigue.
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High-Frequency Reliability: Optimized for stable electrical performance from DC up to 18 GHz (depending on the specific grade).
Key Features
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4-Hole Square Flange: Allows for a flush and permanent mount on panels using standard M2 or M2.5 screws.
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Solder Termination: Features a convenient solder cup or flat tab for easy and reliable internal connections.
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Teflon (PTFE) Insulator: High-purity dielectric ensures stable signal transmission and high heat resistance during the soldering process.
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Standard SMA Female Interface: Features a 1/4-36 threaded barrel and gold-plated beryllium copper socket for universal compatibility.
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Premium Materials: Constructed from gold-plated brass or stainless steel for maximum durability and corrosion resistance.
Applications:
• 4 Hole Panel Mount Enclosures
• RF Signal Interface Panels
• Antenna Feedthrough Panels
• Communication Equipment Cabinets
• Test & Measurement Instrument Panels
• Industrial RF Enclosures
• Telecom Rack Systems
• RF Panel Connections









Ayush (verified owner) –
Very good experience overall. Product works perfectly and feels premium. Packaging and delivery service were also excellent.