The **MPIA4012V2-R68-R** is a high-performance, automotive-grade power inductor manufactured by **Eaton** (formerly Cooper Bussmann). It belongs to the MPIA4012V2 series, which is characterized by its miniature footprint and high current handling capabilities. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's physical and electrical limits: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **MPIA** | Series Name | Miniature Power Inductor, Automotive Grade | | **4012** | Dimensions | Approx. 4.0mm x 4.0mm x 1.2mm | | **V2** | Version | Revision 2 (Design optimization) | | **R68** | Inductance | 0.68 µH (Microhenries) | | **R** | Packaging | Tape and Reel | --- ### 2. Key Electrical Specifications Below are the typical technical parameters for this specific 0.68µH variant: | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.68 µH | Rated at 100 kHz, 0.1 V | | **DCR (Max)** | ~25.0 mΩ | DC Resistance (Internal wire resistance) | | **Isat (Saturation Current)** | ~6.5 A | Current at which inductance drops by 30% | | **Irms (RMS Current)** | ~4.8 A | Current that causes a 40°C temperature rise | | **Operating Temp** | -40°C to +125°C | Standard range for automotive environments | --- ### 3. Core Features & Technology * **AEC-Q200 Qualified:** This part is tested to meet the rigorous quality standards required for automotive electronics (Grade 1). * **Molded Construction:** The inductor uses a metal powder molding technology. This provides "soft saturation" characteristics (it doesn't lose inductance abruptly) and excellent EMI (Electromagnetic Interference) shielding. * **Low Profile:** At only 1.2mm height, it is ideal for thin electronic assemblies and space-constrained PCB designs. * **High Efficiency:** Low DCR helps minimize power loss and heat generation during operation. --- ### 4. Common Applications This inductor is typically used in **DC-DC Converters** (Buck, Boost, or Buck-Boost) for: 1. **Automotive Infotainment:** Powering screens and processors. 2. **ADAS Systems:** Advanced Driver Assistance Systems (Cameras, Sensors). 3. **Industrial IoT:** Compact power supplies for rugged sensors. 4. **Handheld Devices:** High-current power rails in mobile equipment. ---