The **MPI2520R1-R47-R** is a high-performance, miniature power inductor part of the MPI2520R1 series, commonly used in DC-DC converter applications where space is at a premium and high efficiency is required. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the specific characteristics of the component: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **MPI** | Product Family | Molded Power Inductor (Metal Composite Core) | | **2520** | Case Size | 2.5mm x 2.0mm footprint | | **R1** | Profile/Revision | Refers to the height (approx. 1.0mm or 1.2mm) | | **R47** | Inductance Value | **0.47 µH** (R denotes decimal point) | | **R** | Packaging/RoHS | Tape & Reel packaging, RoHS compliant | --- ### 2. Key Technical Specifications These parameters define how the inductor performs under electrical stress. | Parameter | Value | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±20% | | **DCR (Direct Current Resistance)** | ~18-24 mΩ (Typical) | | **I-sat (Saturation Current)** | ~4.1A to 4.8A (Current where inductance drops) | | **I-rms (Rated Current)** | ~3.5A to 4.0A (Based on temperature rise) | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Physical Features & Construction * **Molded Construction:** The coil is embedded in a metal composite powder. This provides excellent magnetic shielding, reducing EMI (Electromagnetic Interference). * **High Power Density:** Because it uses a metallic core rather than ferrite, it can handle higher saturation currents in a smaller physical volume. * **Soft Saturation:** Unlike ferrite inductors that lose inductance sharply when current limits are reached, this part has a gradual ("soft") saturation curve. --- ### 4. Typical Applications This specific inductor is usually found in: 1. **Mobile Devices:** Smartphones, tablets, and wearable tech. 2. **Point of Load (POL):** DC-DC converters for CPUs and GPUs. 3. **Battery Powered Systems:** Where high efficiency and small footprint are critical. 4. **SSD/Storage:** Power management rails for flash memory. ---