The **MPIA4020V2-1R2-R** is a high-performance, automotive-grade miniature power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the MPIA4020V2 series, which is specifically designed for high-current power applications where space is limited and reliability is critical. --- ### 1. Technical Specifications The part number itself contains the primary specifications of the component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.2 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 18.5 mΩ (Typical) | | **Isat (Saturation Current)** | 7.3 A (Typical) | | **Irms (Rated Current)** | 6.5 A (Typical) | | **Dimensions (LxWxH)** | 4.75mm x 4.06mm x 2.0mm | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Key Features * **AEC-Q200 Qualified:** This part is tested for automotive reliability, meaning it can withstand high vibration, thermal shock, and mechanical stress. * **Molded Construction:** It uses a metal powder core technology that provides a "soft saturation" characteristic. Unlike ferrite cores that drop inductance sharply when current increases, this part maintains performance more linearly. * **Magnetic Shielding:** The molded design inherently reduces electromagnetic interference (EMI), which is vital for sensitive electronic circuits. * **High Power Density:** The 4020 package size (approx. 4mm x 4mm x 2mm) allows for high current handling in a very small footprint. --- ### 3. Applications The MPIA4020V2-1R2-R is commonly used in the following scenarios: * **Automotive Electronics:** Infotainment systems, Advanced Driver Assistance Systems (ADAS), and body electronics. * **DC-DC Converters:** Used as a storage inductor in buck, boost, or buck-boost regulators. * **Battery Powered Devices:** High-efficiency power supplies for handheld industrial devices. * **LED Lighting:** Drivers for automotive or industrial LED arrays. --- ### 4. Part Number Breakdown The nomenclature can be deciphered as follows: | Code | Meaning | | :--- | :--- | | **MPIA** | Series Name (Automotive Grade Miniature Power Inductor) | | **4020** | Physical Size (approx. 4.0mm x 4.0mm footprint, 2.0mm height) | | **V2** | Version 2 (Improved materials or manufacturing) | | **1R2** | Inductance Value (1.2 µH; 'R' acts as decimal point) | | **-R** | RoHS Compliant | ---