The **MPIA4012V2-1R0-R** is a high-performance, automotive-grade miniature power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the MPIA4012V2 series, designed for high-current power supplies where space is limited and reliability is critical. --- ### 1. Technical Specifications The following table highlights the core electrical and physical parameters of this component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 19.5 mΩ (Typical) / 23 mΩ (Max) | | **Rated Current (Irms)** | 5.2 A | | **Saturation Current (Isat)** | 7.5 A | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 4.0mm x 4.0mm x 1.2mm | | **Construction** | Metal Composite (Shielded) | --- ### 2. Key Features and Benefits * **Metal Composite Core:** The core material allows for "soft saturation," meaning the inductance drops gradually rather than sharply when current increases. This prevents sudden spikes in power circuits. * **Magnetically Shielded:** Its construction minimizes Electromagnetic Interference (EMI), which is vital for sensitive automotive electronics. * **AEC-Q200 Grade 3 Qualified:** This ensures the part is tested and certified for automotive environments, including high vibration and thermal cycling. * **Low Profile:** At only 1.2mm in height, it is ideal for thin handheld devices or densely packed PCB modules. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying variants: | Segment | Meaning | | :--- | :--- | | **MPIA** | Series Name (Automotive Grade Power Inductor) | | **4012** | Dimensions (4.0mm x 4.0mm x 1.2mm) | | **V2** | Version 2 (Improved materials/manufacturing) | | **1R0** | Inductance Value (1.0 µH) | | **-R** | RoHS Compliant / Lead-Free | --- ### 4. Typical Applications * **Automotive Systems:** ADAS (Advanced Driver Assistance Systems), infotainment, and body electronics. * **DC-DC Converters:** Buck, Boost, and SEPIC converters. * **Consumer Electronics:** High-end tablets, smartphones, and notebooks requiring efficient power delivery. * **Industrial:** Low-power IoT sensors and handheld instrumentation.