The **CPLE-5-50TR-R** is a specialized electronic component, specifically a **high-current, low-profile power inductor** (often referred to as a Coupled Inductor) manufactured by Eaton (formerly Cooper Bussmann). It is primarily used in multi-phase voltage regulator modules (VRMs). --- ## 1. Technical Specifications The part number follows a specific nomenclature related to its physical size and electrical properties. | Parameter | Specification | | :--- | :--- | | **Inductance** | 50 nH (nominal) | | **Number of Phases** | 5-Phase (Coupled) | | **Current Rating (Isat)** | ~50A to 60A per phase (design dependent) | | **DCR (Direct Current Resistance)** | Extremely low (typically < 0.5 mΩ) | | **Footprint/Size** | Approx. 28mm x 5mm (varies by series) | | **Mounting Type** | Surface Mount (SMD) | --- ## 2. Core Functional Features ### Coupled Inductor Technology Unlike standard discrete inductors, a **coupled inductor** integrates multiple windings into a single magnetic core. * **Efficiency:** It allows for better transient response compared to non-coupled designs. * **Current Ripple:** It reduces the steady-state current ripple while maintaining high speed during load transitions. * **Space Saving:** By integrating 5 phases into one component, it significantly reduces the PCB area required for high-density power delivery. ### Low Profile (The "L" in CPLE) The component is designed to be "Low Profile," making it suitable for high-end computing applications where vertical space is limited (e.g., underneath heatsinks or in slim blade servers). --- ## 3. Common Applications This part is almost exclusively found in high-performance power management systems: * **Graphics Cards (GPUs):** Used in the VRM stages of high-end NVIDIA or AMD cards. * **Data Center Servers:** Powering CPUs (Intel Xeon / AMD EPYC) that require hundreds of Amperes. * **ASICs and FPGAs:** Used in cryptocurrency mining hardware or high-speed networking switches. --- ## 4. Why the "R" Suffix? The **-R** at the end of the part number indicates that the component is **RoHS Compliant**. This means it is manufactured without hazardous substances like lead, mercury, or cadmium, meeting global environmental standards. ---