The **MPI4015V2-2R2-R** is a high-current, low-profile power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the MPI4015 series, which is specifically designed for high-density power applications where space is limited and efficiency is critical. --- ### 1. Technical Specifications | Parameter | Value | Notes | | :--- | :--- | :--- | | **Inductance** | 2.2 µH | Rated at 100 kHz, 0.1 Vrms | | **Tolerance** | ±20% | Standard manufacturing tolerance | | **DC Resistance (DCR)** | 40 mΩ (Typ) / 48 mΩ (Max) | Affects power loss/heat | | **Rated Current (Irms)** | 4.3 Amperes | Based on 40°C temperature rise | | **Saturation Current (Isat)** | 5.6 Amperes | Inductance drop of approx. 30% | | **Operating Temperature** | -40°C to +125°C | Includes self-heating | | **Package Size** | 4.0 x 4.0 x 1.5 mm | Length x Width x Height | --- ### 2. Physical Construction and Design The part utilizes **Molded Magnetic Powder** technology, which offers several advantages over traditional wire-wound ferrite inductors: * **Shielded Construction:** The composite molded core naturally provides magnetic shielding, reducing Electromagnetic Interference (EMI) with neighboring components. * **Soft Saturation:** Unlike ferrite cores that lose inductance abruptly when current limits are exceeded, this material exhibits a gradual ("soft") saturation curve. * **Low Profile:** The "15" in the part number indicates a maximum height of 1.5mm, making it ideal for slim electronic devices. --- ### 3. Key Applications This inductor is typically found in DC-DC converter circuits. Common use cases include: * **Mobile Electronics:** Smartphones, tablets, and handheld gaming consoles. * **Computing:** Point-of-Load (POL) converters for CPUs and GPUs in laptops. * **IoT Devices:** Small-form-factor sensors requiring efficient power management. * **Battery Powered Systems:** Where low DCR is necessary to extend battery life. --- ### 4. Part Number Breakdown * **MPI:** Series Name (Molded Power Inductor) * **4015:** Dimensions (4.0mm x 4.0mm x 1.5mm) * **V2:** Version 2 (Improved materials or manufacturing) * **2R2:** Inductance Value (2.2 µH; 'R' acts as the decimal point) * **R:** RoHS Compliant