The **MPIA4020V2-R33-R** is a high-performance, automotive-grade power inductor. It belongs to the **MPIA4020V2** series manufactured by **Eaton (formerly Cooper Bussmann)**. These inductors are specifically designed for high-current power conversion applications where space is limited and harsh environmental conditions exist. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | ~10.5 Amperes | | **Saturation Current (Isat)** | ~13.5 Amperes | | **DC Resistance (DCR)** | ~5.3 mΩ (Typical) | | **Case Size / Dimension** | 4.75mm x 4.06mm x 2.0mm | | **Operating Temperature** | -55°C to +125°C | | **AEC-Q200 Qualified** | Yes (Grade 1) | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **MPIA**: Molded Power Inductor, Automotive Grade. * **4020**: Dimensions (Approx. 4.0mm x 2.0mm height). * **V2**: Version 2 (Improved materials/efficiency). * **R33**: Inductance value (R = decimal point; 0.33 microhenries). * **-R**: RoHS Compliant. --- ### 3. Key Electronic Features #### A. Metal Composite Core Unlike traditional ferrite inductors, this part uses a **metal powder composite core**. This construction provides: * **Soft Saturation:** The inductance decreases gradually as current increases, rather than dropping off sharply. * **Low EMI:** The molded construction acts as a magnetic shield, reducing electromagnetic interference. #### B. High Efficiency The very low **DCR (Direct Current Resistance)** minimizes copper losses ($P = I^2R$), which is critical for maintaining battery life in mobile or automotive systems. #### C. Automotive Grade Reliability Being **AEC-Q200 Grade 1** qualified means it can withstand high mechanical shock, vibration, and moisture, making it suitable for under-the-hood applications or advanced driver-assistance systems (ADAS). --- ### 4. Common Applications * **DC-DC Converters:** Used in Point-of-Load (POL) power supplies. * **Infotainment / Navigation:** Stable power delivery for vehicle screens and GPS units. * **Industrial IoT:** Compact power modules for sensors and gateways. * **LED Lighting:** Drivers for automotive headlights or interior lighting. ---