The **CTXAL5030F-R82M** is a high-performance, surface-mount (SMD) power inductor. It is part of a series typically designed for high-density power applications where low core losses and high current handling are required. ### 1. Technical Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics. | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (indicated by 'M') | | **Dimensions (LxWxH)** | Approx. 5.4 x 5.2 x 3.0 mm | | **DCR (DC Resistance)** | Very low (typically in the milliohm range) | | **Core Material** | Metal Alloy / Carbonyl Powder | | **Shielding** | Magnetically Shielded | --- ### 2. Key Features * **Metal Composite Core:** Unlike traditional ferrite inductors, these use a metal alloy powder. This allows for a "soft saturation" characteristic, meaning the inductance doesn't drop abruptly when current increases. * **High Current Density:** Designed to handle high saturation currents ($I_{sat}$) and high heating currents ($I_{rms}$) relative to its small footprint. * **Low EMI:** The molded construction provides excellent magnetic shielding, reducing electromagnetic interference with surrounding components. * **Stability:** High stability across a wide temperature range, typically operating from -40°C to +125°C. --- ### 3. Applications The CTXAL5030F-R82M is primarily used in DC-DC conversion circuits. Common applications include: * **Voltage Regulator Modules (VRM):** Used in CPU and GPU power supplies. * **Portable Electronics:** Smartphones, tablets, and laptops requiring compact power management. * **Automotive Infotainment:** Powering onboard displays and navigation systems. * **POL (Point of Load) Converters:** Providing stable voltage near high-speed integrated circuits. --- ### 4. Part Number Breakdown While manufacturer codes vary slightly, the standard breakdown for this series is: * **CTXAL:** Series identifier (Metal Alloy Power Inductor). * **5030:** Package size (approx. 5.0mm x 5.0mm footprint, 3.0mm height). * **F:** Lead-free / RoHS compliant. * **R82:** Inductance value ($0.82$ microhenries). * **M:** Tolerance code ($\pm 20\%$).