### MPI4020V2-1R2-R: Component Overview The **MPI4020V2-1R2-R** is a high-current, low-profile power inductor manufactured by **Eaton (formerly Coiltronics)**. It belongs to the MPI4020 series, which is specifically designed for high-density power applications such as DC-DC converters. --- ### Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.2 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 18.5 mΩ (Typical) / 22.0 mΩ (Max) | | **Irms (Rated Current)** | 5.8 A (Typical) | | **Isat (Saturation Current)** | 8.0 A (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Package Dimensions** | 4.0mm x 4.0mm x 2.0mm | | **Shielding** | Magnetically Shielded | --- ### Key Features 1. **Composite Construction**: The part uses a metal flakes powder core. This design allows for high saturation currents (Isat) and a soft saturation curve, meaning the inductance doesn't drop abruptly when current exceeds the limit. 2. **Magnetic Shielding**: The molded construction minimizes Electromagnetic Interference (EMI), making it suitable for noise-sensitive circuits. 3. **Low Profile**: With a height of only 2.0mm, it is ideal for thin electronic devices like tablets, smartphones, and ultra-portable laptops. 4. **High Efficiency**: The low DCR (Direct Current Resistance) helps minimize power loss due to heat, increasing the overall efficiency of the power supply. --- ### Part Number Breakdown The part number follows a specific nomenclature: * **MPI**: Series name (Molded Power Inductor). * **4020**: Dimensions (4.0mm x 4.0mm x 2.0mm). * **V2**: Version 2 (Improved materials or performance). * **1R2**: Inductance value (1.2 µH). * **R**: RoHS compliant. --- ### Common Applications * **DC-DC Converters**: Used as a storage inductor in buck, boost, or buck-boost topologies. * **Mobile Devices**: Power management for CPUs and GPUs in handheld electronics. * **SSD Drives**: Voltage regulation for high-speed storage devices. * **LED Drivers**: Filtering and current control in lighting applications.