The **FP0705R3-R10-R** is a high-current, shielded drum core inductor specifically designed for high-frequency power conversion applications. It belongs to the **FP0705 series** manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance ($L$)** | $0.10\ \mu\text{H}$ ($100\ \text{nH}$) | | **Tolerance** | $\pm 10\%$ | | **Rated Current ($I_{rms}$)** | $43\ \text{Amperes}$ | | **Saturation Current ($I_{sat}$)** | $65\ \text{Amperes}$ | | **DC Resistance (DCR)** | $0.25\ \text{m}\Omega$ (Typical) | | **Operating Temperature** | $-40^\circ\text{C}$ to $+125^\circ\text{C}$ | | **Size / Dimension** | $7.0 \times 7.0 \times 4.95\ \text{mm}$ | --- ## 2. Key Features * **High Current Density:** Capable of handling very high peak currents without saturating quickly. * **Low DCR:** The exceptionally low direct current resistance ($0.25\ \text{m}\Omega$) ensures minimal power loss and high efficiency. * **Ferrite Core Material:** Provides low core losses at high frequencies, making it ideal for modern switching regulators. * **Shielded Construction:** Reduces Electromagnetic Interference (EMI) to neighboring components on the PCB. * **Halogen Free & RoHS Compliant:** Meets modern environmental safety standards. --- ## 3. Applications This inductor is typically used in multi-phase regulators and high-current power modules. Common applications include: * **Computing:** Voltage Regulator Modules (VRMs) for CPUs and GPUs. * **Data Centers:** High-current Point-of-Load (POL) converters. * **Networking:** Routers and switches requiring high-efficiency power stages. * **Energy:** Distributed power systems and DC-DC converters. --- ## 4. Part Number Breakdown The nomenclature `FP0705R3-R10-R` is interpreted as follows: * **FP:** Family Code (Flat-Pac Inductor). * **0705:** Physical Size (approx. $7\text{mm} \times 5\text{mm}$ footprint). * **R3:** Version/Revision code (Internal design reference). * **R10:** Inductance value ($R$ acts as a decimal point, $0.10\ \mu\text{H}$). * **-R:** RoHS compliant suffix. ---