## Technical Overview: MPI4015V2-4R7-R The **MPI4015V2-4R7-R** is a high-performance, miniature power inductor manufactured by **Eaton (formerly Coiltronics)**. It belongs to the MPI4015 series, which is characterized by its rugged construction and high power density in a small surface-mount package. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 4.7 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 77 mΩ (Typical) / 92 mΩ (Maximum) | | **Rated Current (Irms)** | 2.6 A (Typical) | | **Saturation Current (Isat)** | 4.1 A (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 4.0mm x 4.0mm x 1.5mm | --- ### 2. Component Composition and Features * **Core Material:** It utilizes a composite metal powder core. This provides **soft saturation** characteristics, meaning the inductance drops gradually as current increases rather than dropping sharply (which prevents sudden circuit failure). * **Shielding:** The part is magnetically shielded. This is critical for minimizing Electromagnetic Interference (EMI) in compact electronic devices like smartphones or tablets. * **Low Profile:** The "15" in the part number indicates a height of **1.5mm**, making it ideal for ultra-thin PCB designs. * **Construction:** It features a rugged, molded construction that offers excellent resistance to moisture and thermal shock. --- ### 3. Common Applications This inductor is primarily used in DC-DC converters and power management modules where space is at a premium. 1. **Consumer Electronics:** Smartphones, tablets, and handheld gaming consoles. 2. **Computing:** SSDs (Solid State Drives) and ultra-portable laptops. 3. **IoT Devices:** Battery-powered sensors that require efficient voltage regulation. 4. **Distributed Power Systems:** Point-of-Load (POL) converters. --- ### 4. Part Number Breakdown ```text MPI 40 15 V2 - 4R7 - R | | | | | | | | | | | +-- RoHS Compliant | | | | +--------- Inductance Value (4.7 microhenries) | | | +---------------- Version 2 (Improved materials/process) | | +-------------------- Height (1.5 mm) | +------------------------ Footprint (4.0 mm x 4.0 mm) +----------------------------- Series Name (Molded Power Inductor) ```