The **MPIA4020V2-1R5-R** is a high-performance, automotive-grade power inductor manufactured by **Eaton** (formerly Cooper Bussmann). It is part of the MPIA4020 series, characterized by its metal composite construction and compact surface-mount design. --- ### 1. Technical Specifications The following table summarizes the primary electrical and physical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.5 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 27 mΩ (Typical) / 32 mΩ (Max) | | **Isat (Saturation Current)** | 5.8 A (approx. 30% drop in inductance) | | **Irms (Heating Current)** | 4.8 A (approx. 40°C temperature rise) | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 4.0mm x 4.0mm x 2.0mm | | **Construction** | Metal Composite (Shielded) | --- ### 2. Key Features and Construction * **AEC-Q200 Qualified:** This part is rigorously tested for automotive applications, ensuring high reliability under mechanical stress and temperature cycling. * **Metal Composite Core:** Unlike traditional ferrite inductors, the composite core provides a "soft" saturation characteristic. This means the inductance drops gradually as current increases, rather than dropping off sharply. * **Magnetic Shielding:** The molded construction naturally shields the component, reducing Electromagnetic Interference (EMI) which is critical in dense PCB layouts. * **Low DCR:** The design minimizes DC resistance to reduce power loss and improve efficiency in DC-DC converters. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **MPIA**: Series Name (Automotive Grade Metal Power Inductor) * **4020**: Dimensions (4.0mm length/width, 2.0mm height) * **V2**: Version/Generation (Improved materials/process) * **1R5**: Inductance Value (1.5 microhenries) * **-R**: RoHS Compliant --- ### 4. Common Applications Due to its robust nature and high current handling, it is typically used in: * **Automotive Electronics:** Infotainment systems, ADAS (Advanced Driver Assistance Systems), and LED lighting. * **DC-DC Converters:** Point-of-load (POL) modules for high-efficiency power regulation. * **Industrial IoT:** Powering sensors and communication modules in harsh environments. * **Battery Powered Devices:** Where space is limited but high current peaks are expected.