The **DFE252010F-R68M** is a high-performance, miniature power inductor manufactured by **Murata Electronics**. It belongs to the DFE series, which is specifically designed for high-current applications in compact electronic devices like smartphones, tablets, and wearable tech. --- ### 1. Key Technical Specifications | Parameter | Specification | Details | | :--- | :--- | :--- | | **Inductance** | 0.68 µH | Rated at 1MHz | | **Tolerance** | ±20% (M) | Standard industry tolerance | | **DC Resistance (DCR)** | 35 mΩ (Max) | Lower DCR improves efficiency | | **Rated Current (Isat)** | 4.4 A | Based on 30% inductance drop | | **Rated Current (Itemp)** | 3.5 A | Based on 40°C temperature rise | | **Case Size** | 2520 (Metric) | 2.5mm x 2.0mm | | **Height** | 1.0 mm (Max) | Low-profile design | --- ### 2. Component Construction The DFE series utilizes a **metal alloy powder core** rather than traditional ferrite. This construction provides several advantages: * **Magnetic Shielding:** The molded structure naturally shields the component, reducing Electromagnetic Interference (EMI) with surrounding components. * **Soft Saturation Characteristics:** Unlike ferrite inductors that drop inductance sharply when current increases, this metal alloy core loses inductance gradually, making the circuit more stable under heavy loads. * **High Current Density:** The 2520 footprint combined with metal powder allows it to handle significantly higher currents than standard multilayer ceramic inductors of the same size. --- ### 3. Applications and Use Cases This specific part is primarily used in **DC-DC Converter** circuits. Common applications include: 1. **Mobile Communication:** Voltage regulator modules (VRM) for CPUs and GPUs in smartphones. 2. **Power Management Integrated Circuits (PMICs):** Used as the energy storage element in switching regulators. 3. **IoT Devices:** Ideal for small-form-factor devices requiring high efficiency to preserve battery life. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in selecting alternatives: * **DFE:** Series Name (Metal Alloy Inductor). * **2520:** Dimensions (2.5mm x 2.0mm). * **10:** Maximum thickness (1.0mm). * **F:** Packaging/Process Code. * **R68:** Inductance value ($0.68\mu H$). * **M:** Tolerance ($\pm 20\%$).