The **ECS-MPI4040R1-R22-R** is a high-performance, miniature power inductor manufactured by **ECS Inc. International**. It belongs to the MPI4040 series, which is characterized by its metal-alloy construction designed for high-current applications in compact electronic environments. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's physical and electrical limits: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **ECS** | Manufacturer | ECS Inc. International | | **MPI4040** | Series/Size | Metal Power Inductor (4.7 x 4.06 mm) | | **R1** | Height Code | Approximately 1.2 mm to 1.5 mm height | | **R22** | Inductance | **0.22 µH** (R denotes decimal point) | | **-R** | RoHS | Compliant / Lead-Free | --- ### 2. Key Technical Specifications This inductor is engineered for high-frequency DC-DC converters and power modules. | Parameter | Value | | :--- | :--- | | **Inductance** | 0.22 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | ~5.3 mΩ (Max) | | **Rated Current (Irms)** | ~12.0 Amps | | **Saturation Current (Isat)** | ~17.0 Amps | | **Operating Temperature** | -40°C to +125°C | | **Construction** | Shielded, Molded Iron Powder | --- ### 3. Core Features and Benefits * **Magnetically Shielded:** The molded metal-alloy construction minimizes electromagnetic interference (EMI), which is critical for densely packed PCBs. * **High Saturation:** Unlike ferrite inductors, the metal powder core offers "soft saturation," meaning the inductance drops gradually as current increases rather than crashing abruptly. * **Low Profile:** The "R1" designation ensures a low vertical clearance, making it suitable for ultra-thin devices like tablets and smartphones. * **Low DCR:** The low internal resistance reduces power loss through heat, increasing the overall efficiency of the power supply. --- ### 4. Common Applications This specific part is typically found in: 1. **Point of Load (POL) Converters:** Converting higher voltages to low voltages for CPUs/GPUs. 2. **Smartphones and Tablets:** Due to its low profile and high current handling. 3. **Battery Powered Devices:** Where high efficiency is needed to extend battery life. 4. **Distributed Power Systems:** Used in VRMs (Voltage Regulator Modules). ---