Description
The SMA Female 4-Hole Flange Connector for RG141 is a precision RF interface used for mounting through enclosure walls or onto internal bulkheads. Unlike standard bulkhead connectors that use a single nut, the 4-hole square flange provides superior mechanical stability and prevents rotation or movement during high-torque antenna mating.
Optimized for RG141 (.141″) semi-rigid cable, this connector utilizes a direct-solder mounting process. The cable’s solid copper outer conductor is soldered 360 degrees directly to the connector body. This creates a seamless, airtight bond that ensures the highest level of EMI/RFI shielding and minimizes Passive Intermodulation (PIM), making it the industry standard for high-power transmitters and precision test laboratory equipment up to 18 GHz.
Key Technical Advantages
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Exceptional Mechanical Stability: The 4-hole square flange allows for secure mounting with four screws, distributing physical stress evenly across the chassis surface.
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Seamless 360? Shielding: The direct-solder bond between the cable jacket and connector body provides nearly 100% RF isolation.
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Ultra-Low VSWR: Precision-machined internal geometry maintains a consistent 50 Ohm impedance, crucial for minimizing signal loss in high-frequency microwave paths.
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Thermal Reliability: The solder-on design handles thermal expansion and contraction better than crimp or clamp connectors in extreme environments.
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Premium Gold Plating: Features high-purity gold plating over brass or stainless steel for maximum conductivity and long-term corrosion resistance.
Key Features
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4-Hole Square Flange: Allows for flush mounting on panels and provides a vibration-proof mechanical anchor.
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Direct-Solder Termination: Custom-bored for a perfect fit with RG141, RG402, and .141″ semi-rigid cable.
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High-Purity PTFE Insulator: Premium Teflon dielectric ensures stable electrical performance and high heat resistance during soldering.
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Standard SMA Female (Jack): Features internal threads and a gold-plated beryllium copper socket.
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Microwave Frequency Support: Designed for reliable operation from DC up to 18 GHz.
Technical Summary
| Parameter | Specification |
| Frequency Range | DC ~ 18 GHz |
| Impedance | 50 O |
| Body Material | Gold-Plated Brass / Stainless Steel |
| Contact Material | Gold-Plated Beryllium Copper |
| Termination Style | Direct Solder (Body & Center Contact) |
| Mounting Type | 4-Hole Flange (Panel Mount) |







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