The **RG1-403S-R15** belongs to the family of high-performance, shielded power inductors, typically manufactured by companies like **Sumida** or similar power component specialists. These components are designed for high-density power supply circuits. --- ### ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Feature | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.15 µH | Indicated by the "R15" suffix. | | **Tolerance** | ±20% (Typical) | Standard industry tolerance for power inductors. | | **Mounting Type** | Surface Mount (SMD) | Designed for automated PCB assembly. | | **Shielding** | Magnetic Shielding | Reduces EMI (Electromagnetic Interference). | | **Configuration** | Single Inductor | Standard two-terminal power component. | --- ### ## 2. Core Electronic Characteristics The RG1-series is engineered for efficiency in modern DC-DC converters. * **Low DCR (Direct Current Resistance):** The internal windings are designed to minimize heat dissipation and voltage drops, ensuring high efficiency even under heavy loads. * **High Saturation Current ($I_{sat}$):** The core material is optimized to maintain inductance even when high current peaks occur, preventing the inductor from "bottoming out." * **Magnetic Shielding:** The component is encapsulated in a magnetic material that contains the magnetic flux, preventing interference with sensitive nearby components (like CPUs or RF modules). --- ### ## 3. Applications and Usage Due to its low inductance value (0.15 µH), this part is typically used in **high-frequency switching regulators**. #### Common Use Cases: 1. **Point of Load (POL) Converters:** Used in motherboards and servers to step down voltage for processors. 2. **GPU Power Phases:** High-current, low-inductance parts are essential for the rapid current demands of graphics cards. 3. **Voltage Regulator Modules (VRM):** Essential for stable power delivery in telecom and industrial computing. --- ### ## 4. Physical Dimensions (Typical) *While dimensions can vary slightly by manufacturer, the RG1 series generally follows a compact footprint:* * **Footprint:** Small form factor (e.g., 4mm x 4mm or similar depending on the specific "403" designation). * **Construction:** Metal composite or ferrite core with a flat-top surface for vacuum pick-and-place machines. ---