The **MPIA4012V2-1R5-R** is a high-performance, automotive-grade miniature power inductor manufactured by **Eaton (formerly Bussmann)**. It belongs to the MPIA4012V2 series, which is characterized by its metal composite construction and high power density. --- ### 1. Technical Specifications The following table summarizes the core electrical and physical parameters of the component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.5 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 35 mΩ (Typical) / 42 mΩ (Max) | | **Isat (Saturation Current)** | 5.8 A (Typical) | | **Irms (Heating Current)** | 4.0 A (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Case Code (Metric)** | 4040 (4.0mm x 4.0mm) | | **Height** | 1.2 mm (Max) | --- ### 2. Key Features * **Metal Composite Core:** The inductor uses a molded metal powder core. This design provides "soft" saturation characteristics, meaning the inductance drops gradually rather than abruptly when current increases. * **AEC-Q200 Qualified:** This part is tested and certified for automotive environments, ensuring high reliability under mechanical stress and temperature fluctuations. * **Low Profile:** With a maximum height of only 1.2mm, it is ideal for space-constrained electronics. * **Shielded Construction:** The molded design inherently provides magnetic shielding, which minimizes Electromagnetic Interference (EMI) with surrounding components. --- ### 3. Part Number Breakdown The nomenclature follows a specific logic: | Segment | Meaning | | :--- | :--- | | **MPIA** | Series Name (Automotive Grade Miniature Power Inductor) | | **4012** | Dimensions (4.0mm x 4.0mm x 1.2mm) | | **V2** | Version / Generation 2 (Improved materials/efficiency) | | **1R5** | Inductance Value (1.5 µH) | | **R** | RoHS Compliant | --- ### 4. Typical Applications This component is primarily used in DC-DC converters and voltage regulator modules (VRMs). Common applications include: * **Automotive Systems:** Infotainment, ADAS (Advanced Driver Assistance Systems), and Body Electronics. * **Industrial IoT:** Compact sensors and power management units. * **Consumer Electronics:** High-end tablets or handheld devices requiring stable power in a small footprint.