The **MPIA4020V2-R47-R** is a high-performance, automotive-grade power inductor manufactured by **Eaton (formerly Bussmann)**. It belongs to the MPIA4020 series, which is characterized by its miniature size and high current handling capabilities. ### 1. Technical Specifications The part number can be decoded to understand its specific electrical and physical properties: | Parameter | Value | Description | | :--- | :--- | :--- | | **Inductance** | 0.47 µH | Nominal inductance at 100 kHz | | **Tolerance** | ±20% | Standard industrial tolerance | | **DCR (Typical)** | 9.3 mΩ | Direct Current Resistance (at 20°C) | | **Irms (Rated Current)** | 8.0 A | Current causing a 40°C temperature rise | | **Isat (Saturation Current)** | 12.0 A | Current causing a 30% drop in inductance | | **Dimensions** | 4.75 x 4.06 x 2.0 mm | Length x Width x Height | | **Operating Temp** | -55°C to +125°C | Suitable for harsh environments | --- ### 2. Core Features * **AEC-Q200 Qualified:** This indicates the part has passed rigorous stress testing for use in automotive applications (Grade 1). * **Molded Construction:** The inductor uses a metal powder core material. This design provides "soft saturation" characteristics, meaning the inductance drops gradually rather than abruptly when current increases. * **Magnetic Shielding:** The molded body inherently reduces Electro-Magnetic Interference (EMI), protecting nearby sensitive components. * **High Power Density:** Provides high current carrying capacity in a compact 4020 (4mm x 4mm) footprint. --- ### 3. Common Applications This specific inductor is typically found in DC-DC converter circuits where space is limited but power requirements are high: * **Automotive Infotainment:** Powering screens, GPS units, and head units. * **Advanced Driver Assistance Systems (ADAS):** Powering cameras and radar modules. * **Industrial Computing:** Used in point-of-load (POL) converters. * **LED Lighting:** Driver circuits for automotive or industrial lighting. --- ### 4. Footprint and Land Pattern (Reference) The part uses a surface-mount (SMD) pad layout. ```markdown Recommended Pad Layout (Approximate): [ Pad ] --- 1.5mm gap --- [ Pad ] Width of Pad: 3.5mm Length of Pad: 1.5mm ```