The **2822HC125-R** is a specific part number typically associated with high-performance **High-Current Power Inductors**, often manufactured by companies like **Coiltronics (now part of Eaton)**. These components are designed for high-density power conversion applications. --- ## Technical Specifications Below are the typical electronic characteristics for this series: | Parameter | Value/Description | | :--- | :--- | | **Inductance** | 1.25 µH (nominal) | | **Inductance Tolerance** | ±20% | | **Rated Current (Irms)** | High current capacity (typically 30A - 50A depending on heat rise) | | **Saturation Current (Isat)** | High saturation (designed not to saturate easily under peak loads) | | **DC Resistance (DCR)** | Very Low (typically in the mΩ range to reduce power loss) | | **Mounting Type** | Surface Mount (SMD) | | **Operating Temperature** | -40°C to +125°C | --- ## Key Features ### 1. High Power Density The "HC" in the part number often stands for **High Current**. These inductors use a specialized flat-wire or foil construction to maximize the copper cross-section, reducing resistance and allowing more current through a smaller physical footprint. ### 2. Low Core Loss The core material (usually a powdered iron or ferrite composite) is engineered to minimize "eddy current" losses, making the component highly efficient in high-frequency switching environments (up to 2MHz+). ### 3. Magnetic Shielding The 2822 series is generally shielded. This prevents electromagnetic interference (EMI) from leaking out and affecting nearby sensitive components on the PCB. --- ## Common Applications These parts are found in circuits where high current needs to be regulated with minimal heat generation: * **Voltage Regulator Modules (VRMs):** Used in servers and high-end workstations. * **DC-DC Converters:** Buck, Boost, and SEPIC topologies. * **Multi-phase Regulators:** Powering CPUs, GPUs, and FPGAs. * **Industrial Power Supplies:** High-efficiency battery charging and solar inverters. --- ## Physical Construction The **2822** designation usually refers to the physical dimensions in inches (0.28" x 0.22" approximately), though exact sizing should be verified via the manufacturer's datasheet. The **-R** suffix typically denotes compliance with **RoHS** (Restriction of Hazardous Substances) standards.