### Technical Overview: FP1005R2-R08-R The **FP1005R2-R08-R** is a high-current, surface-mount power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the **FP1005 series**, which is designed specifically for high-frequency, high-current applications such as Voltage Regulator Modules (VRMs). --- ### 1. Key Specifications The following table summarizes the primary electrical and physical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 80 nH (0.080 µH) | | **Tolerance** | ±10% | | **DCR (Direct Current Resistance)** | 0.46 mΩ (Typical) | | **Saturation Current ($I_{sat}$)** | 85 A (at 25°C) | | **RMS Current ($I_{rms}$)** | 53 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 10.2 x 7.0 x 4.95 mm (Vertical Mount) | --- ### 2. Physical Construction * **Material:** It uses a ferrite core material. Ferrite is preferred for high-frequency power applications because it exhibits very low core losses. * **Form Factor:** The "1005" designation refers to the physical footprint (approximately 10mm x 5mm, though specific dimensions vary by series). * **Termination:** It features a surface-mount design with high-conductivity plating, allowing for reliable soldering in automated SMT processes. --- ### 3. Application Use Cases This specific inductor is engineered for **Point of Load (POL)** converters and multi-phase buck regulators. Typical environments include: * **Computing:** Server CPUs, GPUs, and Memory Power. * **Networking:** Switches, Routers, and Base Stations. * **Data Centers:** High-density power modules where efficiency and space are critical. --- ### 4. Performance Characteristics * **High Saturation:** The 85A $I_{sat}$ rating indicates that the inductance will not drop significantly even under extreme current loads, preventing circuit instability. * **Low DCR:** With a resistance of only 0.46 mΩ, power wasted as heat ($I^2R$ loss) is minimized, leading to higher overall system efficiency. * **Flat Rolloff:** The ferrite core provides a relatively stable inductance versus current curve until the saturation point is reached. ---