The **ECS-MPI4040R1-R10-R** is a high-efficiency, miniature power inductor manufactured by **ECS Inc. International**. It belongs to the MPI4040 series, which is designed for high-frequency DC-DC converters and power management modules where space and thermal stability are critical. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.10 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 3.2 mΩ (Max) | | **Rated Current (Irms)** | 15.2 A | | **Saturation Current (Isat)** | 32.0 A | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 4.7 x 4.3 x 1.2 mm (Low Profile) | | **Construction** | Metal Alloy / Shielded | --- ### ## Key Features & Construction 1. **Metal Alloy Core**: Unlike traditional ferrite cores, this inductor uses a molded metal alloy powder. This provides **soft saturation** characteristics, meaning the inductance drops gradually rather than abruptly when the current increases. 2. **Magnetic Shielding**: The molded construction inherently shields the component, reducing Electromagnetic Interference (EMI) and protecting surrounding sensitive components. 3. **High Current Density**: Despite its small 4040 footprint (approx. 4mm x 4mm), it can handle a saturation current of up to 32A, making it ideal for high-power-density designs. 4. **Low DCR**: The very low DC resistance (3.2 mΩ) minimizes power loss due to heat, significantly increasing the efficiency of power supplies. --- ### ## Common Applications * **DC-DC Converters**: Used in point-of-load (POL) converters for CPUs and GPUs. * **Mobile Devices**: Ideal for smartphones, tablets, and laptops due to its ultra-low profile (1.2mm height). * **Battery Powered Systems**: High efficiency helps extend battery life. * **Industrial Electronics**: Used in compact embedded systems and IoT gateways. --- ### ## Part Number Breakdown * **ECS**: Manufacturer (ECS Inc. International) * **MPI**: Series Name (Molded Power Inductor) * **4040**: Dimensions (approx. 4.0mm x 4.0mm) * **R1**: Profile/Version Code * **R10**: Inductance Value (R10 = 0.10 µH) * **R**: Packaging (Typically refers to Tape & Reel)