The **DFE252010F-R33M** is a fixed power inductor manufactured by Murata Electronics. It is part of the DFE252010F series, which is designed for high-density power supply circuits in mobile devices. --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% (M) | | **Case Size (Metric)** | 2520 (2.5mm x 2.0mm) | | **Thickness (Height)** | 1.0 mm (Max) | | **DC Resistance (RDC)** | 17 mΩ (Typical) | | **Rated Current (Isat)** | ~5.7 A (Based on inductance change) | | **Rated Current (Itemp)** | ~4.5 A (Based on temperature rise) | | **Construction** | Metal Alloy (Magnetic Shielded) | --- ### ### Key Features 1. **Metal Alloy Core:** Unlike traditional ferrite inductors, this uses a metal alloy powder. This allows for a higher saturation current and better performance in compact spaces. 2. **Magnetic Shielding:** The construction minimizes electromagnetic interference (EMI), which is critical for sensitive electronics like smartphones and tablets. 3. **Low Profile:** With a maximum height of 1.0mm, it is ideal for ultra-thin portable devices. 4. **Soft Saturation:** The metal alloy core provides "soft" saturation characteristics, meaning the inductance drops gradually rather than abruptly as current increases. --- ### ### Part Number Breakdown The part number can be decoded as follows: * **DFE**: Series Name (Metal Alloy Inductor) * **2520**: Dimensions (2.5mm length x 2.0mm width) * **10**: Height (1.0mm) * **F**: Internal identification code * **R33**: Inductance value (R33 = 0.33 microhenries) * **M**: Tolerance (±20%) --- ### ### Typical Applications This component is primarily used in **DC-DC converter circuits** for: * Smartphones and Wearables * Hard Disk Drives (HDD) and SSDs * Portable medical equipment * Any application requiring high current in a small PCB footprint.