The **MPIA4020V2-2R2-R** is a high-performance, automotive-grade power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the MPIA4020 series, characterized by its miniature footprint and high current handling capabilities. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 2.2 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 48 mΩ (Typical) / 58 mΩ (Maximum) | | **Rated Current (Irms)** | 3.6 Amperes | | **Saturation Current (Isat)** | 5.5 Amperes | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (L x W x H)** | 4.75mm x 4.06mm x 2.0mm | --- ### 2. Component Composition & Design The "V2" in the part number indicates a specific revision or construction style, typically focusing on improved efficiency or thermal stability. * **Core Material:** It uses a metal flake powder core. This composite material provides "soft" saturation characteristics, meaning the inductance drops gradually rather than abruptly as current increases. * **Shielding:** The part is magnetically shielded. This minimizes Electromagnetic Interference (EMI), which is critical in densely packed electronic assemblies. * **Terminations:** The leads are usually tin-plated over copper, designed for standard SMT (Surface Mount Technology) reflow soldering. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying variants: | Segment | Meaning | | :--- | :--- | | **MPIA** | Series Name (Automotive Grade Miniature Power Inductor) | | **4020** | Case Size (Approx. 4.0mm x 4.0mm x 2.0mm) | | **V2** | Revision/Version 2 | | **2R2** | Inductance Value (2.2 microhenries) | | **-R** | RoHS Compliant | --- ### 4. Common Applications Due to its **AEC-Q200 Grade 1** qualification, this inductor is primarily used in environments requiring high reliability: 1. **Automotive Electronics:** Infotainment systems, Advanced Driver Assistance Systems (ADAS), and body electronics. 2. **DC-DC Converters:** Used as a storage inductor in buck, boost, or buck-boost regulators. 3. **Industrial IoT:** Compact power supplies for sensors and gateways. 4. **Battery Powered Devices:** Handheld terminals or mobile devices where space is at a premium but high efficiency is required. ---