The **DFE252010F-R82M** is a fixed, metal-alloy core inductor designed for power circuits. It is manufactured by **Murata Electronics** (formerly Toko). This specific component belongs to the DFE252010F series, which is known for its compact size and high current handling capabilities. --- ### 1. Component Specifications The following table outlines the primary electrical and physical characteristics: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (M) | | **DC Resistance (DCR)** | 48 mΩ (Max) / 38 mΩ (Typ) | | **Rated Current (Isat)** | 3.8 A (Based on Inductance change) | | **Rated Current (Itemp)** | 3.1 A (Based on Temperature rise) | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (L x W x H)** | 2.5 x 2.0 x 1.0 mm | | **Case Size (EIA)** | 1008 | --- ### 2. Key Features and Construction * **Metal Alloy Core:** Unlike traditional ferrite inductors, the metal alloy core provides superior "soft saturation" characteristics. This means the inductance drops gradually as current increases, rather than dropping sharply. * **Magnetic Shielding:** The construction is magnetically shielded, which reduces electromagnetic interference (EMI) and prevents the inductor from affecting nearby sensitive components on the PCB. * **Low Profile:** With a height of only 1.0 mm, it is ideal for ultra-thin electronic devices like smartphones and wearables. --- ### 3. Part Number Breakdown The part number follows a specific nomenclature: | Segment | Meaning | | :--- | :--- | | **DFE** | Series Name (Metal Alloy Type) | | **2520** | Dimensions (2.5mm x 2.0mm) | | **10** | Height (1.0mm) | | **F** | Internal Construction Code | | **R82** | Inductance Value (R82 = 0.82 µH) | | **M** | Tolerance (M = ±20%) | --- ### 4. Common Applications Due to its high efficiency and small footprint, this inductor is typically used in: 1. **DC-DC Converters:** Point-of-Load (POL) modules for mobile devices. 2. **Smartphones & Tablets:** Power management integrated circuits (PMIC). 3. **Laptops:** Small-sized voltage regulator modules. 4. **IoT Devices:** Compact battery-powered sensors requiring efficient power conversion.