The **MPIA2512V2-R33-R** is a high-performance, automotive-grade miniature power inductor manufactured by **Eaton (formerly Bussmann)**. It belongs to the MPIA2512V2 series, which is characterized by its metal composite construction and high current handling in a small footprint. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% | | **DCR (Direct Current Resistance)** | 16.5 mΩ (Typical) / 21 mΩ (Max) | | **Isat (Saturation Current)** | 7.0 Amperes (based on 30% drop in inductance) | | **Irms (Heating Current)** | 4.8 Amperes (based on 40°C temperature rise) | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 2512 (2.5mm x 2.0mm x 1.2mm) | --- ### 2. Construction and Design Features * **Metal Composite Core:** Unlike traditional ferrite inductors, this part uses a molded metal powder core. This provides "soft saturation" characteristics, meaning the inductance drops gradually rather than abruptly when current increases. * **Shielded Design:** The molded construction naturally shields the component, reducing Electromagnetic Interference (EMI) which is critical in sensitive automotive electronics. * **AEC-Q200 Grade 1:** This part is qualified for automotive use, ensuring high reliability under mechanical vibration, thermal shock, and moisture resistance. --- ### 3. Application Use Cases This inductor is primarily used in **DC-DC converters** and **Voltage Regulator Modules (VRMs)**. Common applications include: 1. **Automotive Infotainment:** Powering head units, navigation systems, and displays. 2. **ADAS (Advanced Driver Assistance Systems):** Providing stable power for cameras and sensors. 3. **Portable Electronics:** High-density power supplies for smartphones or tablets due to its low profile (1.2mm height). 4. **IoT Devices:** Where space is limited but high peak currents are required for wireless transmission. --- ### 4. Part Number Breakdown The part number communicates specific characteristics: * **MPIA**: Metal Power Inductor, Automotive Grade. * **2512**: Package size (2.5mm x 2.0mm). * **V2**: Generation/Version (Revision 2). * **R33**: Inductance value (R = decimal point; 0.33 µH). * **R**: Packaging suffix (usually indicates Tape and Reel). ---