The **31-5136-RFX** is a high-quality RF (Radio Frequency) connector manufactured by **Amphenol RF**. It is specifically a BNC (Bayonet Neill–Concelman) bulkhead jack designed for coaxial cable terminations. --- ### 1. Technical Specifications The following table highlights the core electronic and mechanical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Connector Type** | BNC Female (Jack) | | **Mounting Type** | Bulkhead, Rear Mount (Nut/Washer included) | | **Impedance** | 50 Ohms | | **Frequency Range** | 0 - 4 GHz | | **Body Material** | Brass | | **Body Plating** | Nickel | | **Contact Material** | Phosphor Bronze | | **Contact Plating** | Gold | | **Insulator Material** | Delrin (Acetal) | | **Termination Style** | Solder Cup | --- ### 2. Key Features and Design * **Bulkhead Mounting:** This part is designed to be mounted through a panel or chassis. It allows for a secure connection point on the exterior of a device while the internal electronics are soldered to the rear. * **Solder Cup Termination:** Unlike crimp-style connectors, the 31-5136-RFX features a solder cup. This allows for direct wire attachment without the need for specialized crimping tools, making it ideal for custom prototyping or repairs. * **RFX Series:** The "RFX" designation usually refers to Amphenol's commercial-grade line. These parts provide high performance for standard applications at a more economical price point compared to military-spec (MIL-SPEC) equivalents. --- ### 3. Common Applications Due to its 50-ohm impedance and 4 GHz frequency limit, this part is commonly used in: 1. **Test and Measurement Equipment:** Oscilloscopes and signal generators. 2. **Antenna Systems:** Providing an interface for external antennas on metal enclosures. 3. **Video Surveillance:** Analog BNC video signal transmission. 4. **Networking:** Older Thinnet Ethernet systems or specialized wireless base stations. --- ### 4. Dimensional Data * **Panel Cutout:** Usually requires a "D-Flat" hole to prevent the connector from rotating once installed. * **Dielectric:** The use of Delrin provides good mechanical strength and insulation, though it has a lower melting point than Teflon (PTFE), so care must be taken during soldering.