The **PL71-R** is a specific series of high-performance micro-coaxial connectors primarily designed by **Hirose Electric**. These connectors are engineered for high-frequency signal transmission, commonly used in telecommunications and broadcasting equipment. --- ### ## Technical Specifications The PL71-R series is known for its compact size and high reliability in RF (Radio Frequency) applications. | Feature | Specification | | :--- | :--- | | **Connector Type** | BNC Style (Micro) | | **Impedance** | 75 Ohms (Standard for Video/Telecom) | | **Frequency Range** | Up to 3 GHz | | **Mounting Type** | Right Angle / PCB Mount (indicated by 'R') | | **V.S.W.R.** | 1.3 or less (at 3 GHz) | | **Mating Mechanism** | Push-on / Snap-lock | --- ### ### Key Electronic Components & Materials The performance of the PL71-R is derived from its high-quality material composition: 1. **Center Contact:** Usually made of **Phosphor Bronze** or Beryllium Copper with **Gold plating**. This ensures minimal signal loss and prevents oxidation over time. 2. **Insulator:** High-grade **PTFE (Teflon)** is used because of its low dielectric constant, which is essential for maintaining 75-ohm impedance stability at high frequencies. 3. **Outer Shell/Body:** Typically **Brass** with **Nickel or Gold plating**. This provides the necessary EMI (Electromagnetic Interference) shielding to protect the signal from external noise. 4. **Locking Springs:** Internal metallic springs ensure a secure "click" when mated, providing tactile feedback and vibration resistance. --- ### ### Common Applications Because the PL71-R is a 75-ohm connector, it is specifically optimized for: * **Broadcasting:** HD-SDI video signals. * **Telecommunications:** Switching equipment and base stations. * **Medical Imaging:** High-resolution video output. * **Measurement Instruments:** Precision signal testing. --- ### ### Design Advantages * **Space Efficiency:** The "R" (Right Angle) designation allows for a lower profile on Printed Circuit Boards (PCBs), making it ideal for slim devices or high-density rack mounts. * **Broadband Performance:** While many small connectors struggle with signal reflection, the PL71-R maintains a low V.S.W.R. up to 3 GHz, supporting digital high-definition standards.