The **DFE201612P-R47M** is a high-performance, miniature metal alloy inductor manufactured by **Murata Electronics**. It is specifically designed for power management circuits in compact electronic devices like smartphones, tablets, and wearables. --- ### 1. Key Technical Specifications | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.47 µH | The nominal inductance value. | | **Tolerance** | ±20% | The allowable deviation from the nominal value. | | **DC Resistance (DCR)** | 26 mΩ (Max) | Internal resistance; lower values improve efficiency. | | **Rated Current (Isat)** | 4.4 A | Current at which inductance drops by 30%. | | **Rated Current (Itemp)** | 3.5 A | Current that causes a 40°C temperature rise. | | **Operating Temp** | -40°C to +125°C | Thermal range for stable operation. | --- ### 2. Physical Dimensions (Package Code: 2016) The "2016" in the part number refers to its metric dimensions (2.0mm x 1.6mm). * **Length (L):** 2.0 mm * **Width (W):** 1.6 mm * **Height (T):** 1.2 mm (Max) --- ### 3. Core Features and Construction * **Metal Alloy Technology:** Unlike traditional ferrite inductors, this part uses a metal iron powder core. This allows for **Soft Saturation** characteristics, meaning the inductance drops gradually rather than abruptly when current increases. * **Magnetic Shielding:** The structure is magnetically shielded, which minimizes Electromagnetic Interference (EMI) with surrounding components on a dense PCB. * **Low Profile:** With a maximum height of 1.2mm, it is ideal for ultra-thin consumer electronics. * **High Efficiency:** The low DC resistance (DCR) minimizes power loss due to heat, extending battery life in mobile devices. --- ### 4. Applications The DFE201612P-R47M is primarily used in **DC-DC Converters** for: * **Smartphones:** CPU/GPU power rails. * **Wearables:** Smartwatches and fitness trackers. * **IoT Modules:** Compact wireless communication sensors. * **Portable SSDs:** Power management for high-speed data controllers. --- ### 5. Part Number Breakdown ```text DFE 201612 P - R47 M | | | | | | | | | +-- Tolerance (M = ±20%) | | | +----- Inductance Value (R47 = 0.47 µH) | | +---------- Type/Internal Code | +--------------- Dimensions (2.0 x 1.6 x 1.2 mm) +--------------------- Series Name (Metal Alloy Inductor) ```