The **DFE201610E-R47M** is a power inductor manufactured by Murata Manufacturing. It is part of the DFE series, which is specifically designed for high-efficiency power supply circuits in compact electronic devices. --- ## 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **DFE** | Series Name | Metal alloy type, molded power inductor. | | **2016** | Dimensions | 2.0mm x 1.6mm (Metric 2016). | | **10** | Height | 1.0mm (maximum height). | | **E** | Type | Material/Internal structure code. | | **R47** | Inductance | 0.47 µH (Microhenries). | | **M** | Tolerance | ±20% (Standard tolerance). | --- ## 2. Technical Specifications The DFE201610E-R47M is engineered for high-current applications despite its small footprint. ### Electrical Characteristics * **Inductance:** 0.47 µH * **DC Resistance (DCR):** Typical 26 mΩ (Max 32 mΩ). * **Rated Current (Isat):** ~4.8A (based on 30% inductance change). * **Rated Current (Itemp):** ~3.6A (based on 40°C temperature rise). * **Operating Temperature:** -40°C to +125°C. ### Physical Construction * **Core Material:** Metal Alloy (Iron-based powder). * **Shielding:** Magnetic Shielded (Molded structure). * **Termination:** Lead-free (RoHS compliant). --- ## 3. Key Features and Advantages ### A. High Current Handling Because it uses a **metal alloy powder** rather than traditional ferrite, the inductor exhibits "Soft Saturation." This means the inductance drops gradually as current increases, rather than dropping sharply, preventing circuit failure during peak loads. ### B. Low Magnetic Leakage The molded structure encapsulates the coil within the magnetic material. This results in very low Electromagnetic Interference (EMI), making it ideal for high-density PCB layouts where components are placed close together. ### C. Compact Profile With a 2.0mm x 1.6mm footprint and a 1.0mm height, it is optimized for mobile devices, wearables, and thin modules. --- ## 4. Typical Applications This component is primarily used in **DC-DC converters** for: * **Smartphones & Tablets:** Power management ICs (PMIC). * **Wearables:** Smartwatches and fitness trackers. * **SSD/Storage:** Power rails for flash controllers. * **IoT Modules:** Compact wireless communication modules. ---