The **SC5022FH-R47** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converter applications. It belongs to a category of inductors designed for high reliability and efficiency in power management circuits. --- ### 1. Technical Specifications The part number "R47" typically signifies the inductance value, while the series "SC5022FH" defines the physical footprint and core material characteristics. | Parameter | Typical Value | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±20% (Standard) | | **DC Resistance (DCR)** | ~3.8 mΩ (Max) | | **Saturation Current ($I_{sat}$)** | ~30.0 A | | **Heating Current ($I_{rms}$)** | ~18.0 A | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | ~18.5 x 15.2 x 7.1 mm | --- ### 2. Key Features * **High Current Handling:** Designed to manage high saturation currents without a sharp drop in inductance. * **Low DCR:** The low direct current resistance minimizes power loss (heat) during operation, increasing overall system efficiency. * **Magnetic Shielding:** Usually features a shielded construction to minimize Electromagnetic Interference (EMI) with neighboring components. * **Robust Construction:** The "FH" series often denotes high-frequency capability, making it suitable for modern switching regulators. --- ### 3. Circuit Applications This component is primarily used in power stages where voltage needs to be stepped down or regulated efficiently. 1. **Voltage Regulator Modules (VRM):** Used in CPU/GPU power delivery. 2. **DC-DC Converters:** Buck, Boost, or Buck-Boost topologies. 3. **Industrial Power Supplies:** High-wattage power bricks and DIN rail supplies. 4. **Battery Powered Systems:** Where high efficiency is required to extend battery life. --- ### 4. Part Number Breakdown (Typical) | Segment | Meaning | | :--- | :--- | | **SC** | Manufacturer Series Prefix | | **5022** | Physical dimensions (standardized footprint) | | **FH** | High-frequency/High-current series designation | | **R47** | Inductance value (R = decimal point; 0.47 microhenries) |