The **MPI4020V2-R47-R** is a high-performance, power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the MPI4020 series, characterized by its high power density and rugged construction. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical properties: | Parameter | Specification | |:---|:---| | **Inductance** | 0.47 µH (Microhenries) | | **Tolerance** | ±20% | | **DCR (Direct Current Resistance)** | ~7.2 mΩ (Nominal) | | **Isat (Saturation Current)** | ~13 Amperes | | **Irms (Heating Current)** | ~8.5 Amperes | | **Operating Temperature** | -40°C to +125°C | | **Dimensions** | 4.45mm x 4.06mm x 2.0mm | --- ### 2. Component Features * **Metal Composite Core:** Unlike traditional ferrite cores, this inductor uses a molded metal powder core. This provides "soft saturation" characteristics, meaning the inductance drops gradually rather than abruptly as current increases. * **Shielded Construction:** The molded design inherently provides magnetic shielding, which minimizes Electromagnetic Interference (EMI) with surrounding components. * **High Current Density:** The V2 series is optimized for low DCR, reducing power loss through heat (Joule heating). * **Ruggedness:** Designed to withstand high vibration and thermal shock, making it suitable for automotive and industrial environments. --- ### 3. Applications This inductor is typically used in **DC-DC converters** and voltage regulation modules. Common applications include: * **Computing:** Laptops, servers, and graphics cards. * **Industrial:** High-efficiency power supplies and point-of-load (POL) converters. * **Consumer Electronics:** Handheld devices and tablets. * **Automotive:** Infotainment systems and ADAS modules (where high current in a small footprint is required). --- ### 4. Footprint and Packaging The "4020" in the part number indicates the physical size: * **Length/Width:** Roughly 4.0mm x 4.0mm. * **Height:** 2.0mm max. * **Packaging:** Supplied on Tape and Reel (indicated by the final "-R").