The **DFE201210U-R24M#** is a high-performance, miniature power inductor manufactured by **Murata Electronics**. It belongs to the DFE series, which utilizes metal alloy magnetic materials to achieve high current capabilities in a small footprint. --- ### 1. General Specifications Below are the primary technical parameters for this specific part: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.24 µH | | **Tolerance** | ±20% | | **Case Size (Metric)** | 2012 (2.0mm x 1.25mm) | | **Height (Max)** | 1.0 mm | | **Rated Current (Isat)** | 5.2 A (based on Inductance change) | | **Rated Current (Itemp)** | 4.1 A (based on Temperature rise) | | **DC Resistance (DCR)** | 21 mΩ (Max) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Key Construction Features * **Metal Alloy Core:** Unlike traditional ferrite inductors, this part uses a metal powder core. This allows for **Soft Saturation** characteristics, meaning the inductance drops gradually as current increases rather than dropping abruptly. * **Magnetic Shielding:** The structure is naturally shielded, which minimizes Electromagnetic Interference (EMI) with surrounding components on the PCB. * **Monolithic Structure:** The design provides high mechanical robustness against vibration and thermal shock. --- ### 3. Part Number Breakdown The nomenclature for this series follows a specific logic: 1. **DFE**: Series Name (Metal Alloy Inductor). 2. **2012**: Dimensions in millimeters (2.0mm length x 1.25mm width). 3. **10**: Height code (1.0mm max). 4. **U**: Material/Application characteristic code. 5. **R24**: Inductance value (R24 = 0.24 microhenries). 6. **M**: Tolerance (M = ±20%). 7. **#**: Packaging/Internal tracking suffix. --- ### 4. Typical Applications This component is designed for high-efficiency power conversion in space-constrained environments: * **DC-DC Converters:** Used as the storage inductor in switching regulators. * **Mobile Devices:** Smartphones, tablets, and wearables where low profile is critical. * **CPU Power Supply:** Due to the high current rating (up to 5.2A), it is suitable for point-of-load (POL) power stages in portable processors.