The **FP1110V1-R32-R** is a high-current, surface-mount power inductor typically used in DC-DC converters, voltage regulator modules (VRMs), and high-density power applications. It is part of a specialized series of "Flat-Pac" or high-frequency power inductors known for their low core loss and high efficiency. --- ### 1. Key Technical Specifications | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 320 nH (0.32 µH) | | **Tolerance** | ±10% | | **Saturation Current ($I_{sat}$)** | Typically ~55A to 65A (varies by temperature rise) | | **DC Resistance (DCR)** | Extremely low (typically < 0.5 mΩ) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Design & Composition The "FP" prefix stands for **Flat-Pac**. The design is optimized for automated assembly and thermal management. * **Core Material:** Usually a ferrite core material characterized by low core loss at high switching frequencies (up to several MHz). * **Winding:** Uses a flat-wire or "ribbon" copper winding. This maximizes the cross-sectional area of the conductor, which significantly reduces the **DC Resistance (DCR)** and minimizes the **Skin Effect** at high frequencies. * **Shielding:** It is a magnetically shielded construction, which minimizes Electromagnetic Interference (EMI) with surrounding components on the PCB. --- ### 3. Application Use Cases Because of its high current handling and low profile, the FP1110V1-R32-R is commonly found in: 1. **Multi-phase Buck Converters:** Used in CPU/GPU power supplies (Vcore) for servers and high-end workstations. 2. **Point-of-Load (POL) Converters:** Providing stable low-voltage power to FPGAs and ASICs. 3. **High-Density Power Modules:** Where vertical space is limited, but high amperage is required. --- ### 4. Part Number Breakdown (Generic Analysis) * **FP1110:** Refers to the physical footprint/package size (approx. 11.0mm x 8.0mm or 11.0mm x 10.0mm depending on the specific series iteration). * **V1:** Usually indicates a specific version or generation of the internal winding/core structure. * **R32:** Indicates the Inductance value. "R" acts as a decimal point. **R32 = 0.32 µH**. * **R:** Usually denotes "RoHS Compliant" or refers to the packaging type (Tape and Reel).