The **MPI2010V1-R47-R** is a high-performance, miniature power inductor typically used in DC-DC converter circuits. It is part of the MPI series manufactured by **Coiltronics (now part of Eaton)**. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electronic characteristics: | Parameter | Specification | Details | | :--- | :--- | :--- | | **Inductance** | 0.47 µH | Measured at 100 kHz, 0.1 Vrms | | **Tolerance** | ±20% | Standard industry tolerance for power inductors | | **Current Rating (Irms)** | ~4.3 A | The current that causes a 40°C temperature rise | | **Saturation Current (Isat)** | ~6.5 A | The current where inductance drops by 30% | | **DC Resistance (DCR)** | 22 mΩ (max) | Measures the internal resistance of the copper winding | | **Operating Temp** | -40°C to +125°C | Suitable for industrial and consumer electronics | --- ### 2. Physical Construction * **Dimensions:** The "2010" in the part number refers to the footprint size, approximately **2.0mm x 1.6mm** with a height of **1.0mm**. * **Core Material:** It uses a **Metal Powder Core** technology. This provides a "soft saturation" characteristic, meaning the inductance decreases gradually as current increases, rather than dropping off sharply. * **Shielding:** It is magnetically shielded, which reduces Electro-Magnetic Interference (EMI) with neighboring components on the PCB. --- ### 3. Application Areas Because of its small size and high current handling capability, this part is commonly found in: 1. **Mobile Devices:** Smartphones, tablets, and wearables where board space is critical. 2. **Point-of-Load (POL) Converters:** Converting higher voltages down to the low voltages required by CPUs or FPGAs. 3. **Battery Powered Systems:** High efficiency is required to extend battery life. --- ### 4. Key Advantages * **High Power Density:** Large current capacity relative to its tiny 2010 footprint. * **Low Core Loss:** Optimized for high-frequency switching regulators (up to several MHz). * **Ruggedness:** The molded construction offers excellent resistance to moisture and mechanical shock.