The **31-28-RFX** is a high-performance, precision RF (Radio Frequency) connector, specifically a **BNC Straight Plug** designed for use with specific types of coaxial cables. It is manufactured by **Amphenol RF**, a global leader in interconnect technology. --- ### 1. Technical Specifications Below are the primary electronic and mechanical specifications for the 31-28-RFX: | Property | Specification | | :--- | :--- | | **Connector Type** | BNC (Bayonet Neill–Concelman) | | **Gender** | Male (Plug) | | **Impedance** | 50 Ohms | | **Frequency Range** | DC to 4 GHz (Optimized performance) | | **Voltage Rating** | 500 Volts Peak | | **Dielectric Material** | PTFE (Teflon) | | **Body Material** | Brass | | **Body Plating** | Nickel | | **Contact Plating** | Gold | --- ### 2. Physical Design and Assembly The "RFX" designation often indicates a commercial-grade series that provides a cost-effective solution without sacrificing high-frequency integrity. * **Attachment Method:** This is a **Crimp-Crimp** connector. Both the internal center contact and the external outer braid ferrule are secured using a crimping tool. * **Cable Compatibility:** It is specifically designed to fit **RG-58, RG-141, and LMR-195** coaxial cables. * **Coupling Mechanism:** It uses a two-stud bayonet lock system, allowing for "quick connect/disconnect" functionality with a simple quarter-turn. --- ### 3. Applications The 31-28-RFX is commonly used in environments requiring reliable RF transmission: 1. **Test and Measurement:** Oscilloscopes, signal generators, and spectrum analyzers. 2. **Telecommunications:** Base station equipment and radio antennas. 3. **Broadcasting:** Video signals (though 75-ohm versions are more common for HD-SDI, 50-ohm is standard for RF data). 4. **Security:** CCTV systems utilizing RG-58 cabling. --- ### 4. Cross-Reference & Alternatives If you are sourcing this part, it is helpful to know common equivalents: ```markdown - Manufacturer: Amphenol RF - Part Number: 31-28-RFX - Alternative Series: 31-58 (Standard Military Grade) - Competitor Equivalent: TE Connectivity 225395-6 ```