The **DFE252010F-R47M** is a fixed metal alloy inductor designed for power circuits, primarily used in mobile devices and compact electronics. It belongs to the DFE series manufactured by **Murata Electronics**. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Parameter | Specification | Details | | :--- | :--- | :--- | | **Inductance** | 0.47 µH | ±20% Tolerance | | **Rated Current (Isat)** | 4.8 A | Based on Inductance Change (Max) | | **Rated Current (Itemp)** | 3.7 A | Based on Temperature Rise (Max) | | **DC Resistance (DCR)** | 26 mΩ | Max resistance (typical 21 mΩ) | | **Case Code** | 1008 (2520 Metric) | 2.5mm x 2.0mm x 1.0mm | | **Operating Temp** | -40°C to +125°C | Includes self-heating | | **Construction** | Metal Alloy | Magnetic Shielded | --- ### 2. Breakdown of the Part Number The alphanumeric code provides specific details about the component's construction: * **DFE**: Series Name (Metal alloy type, high current handling). * **2520**: Dimensions (2.5mm length × 2.0mm width). * **10**: Height (1.0mm maximum). * **F**: Internal manufacturing code (Standard suffix). * **R47**: Inductance value (R represents the decimal point: 0.47 microhenries). * **M**: Tolerance (M = ±20%). --- ### 3. Key Features and Advantages * **High Current Capability:** Due to the metal alloy powder core, it handles higher saturation currents than traditional ferrite inductors of the same size. * **Magnetic Shielding:** The molded construction minimizes electromagnetic interference (EMI), which is critical for densely packed circuit boards. * **Low DC Resistance:** Minimizes power loss and heat generation, increasing overall battery life in portable devices. * **Soft Saturation:** Unlike ferrite cores that drop inductance sharply when overloaded, metal alloy cores provide a gradual "soft" saturation curve. --- ### 4. Typical Applications The DFE252010F-R47M is optimized for **DC-DC conversion** in high-performance electronics: * **Smartphone PMICs:** Power management integrated circuits for CPUs and GPUs. * **Wearables:** Smartwatches and fitness trackers requiring low-profile components. * **Laptops/Tablets:** Voltage regulator modules (VRMs). * **SSD Controllers:** Powering high-speed data storage units.