The **FP0805R1-R10-R** is a high-current, shielded drum core power inductor manufactured by Eaton (formerly Cooper Bussmann). It belongs to the FP0805R1 series, specifically designed for high-frequency voltage regulator modules (VRMs) and point-of-load (POL) converters. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 100 nH (0.10 µH) | | **Tolerance** | ±10% | | **Current Rating ($I_{rms}$)** | 35 Amperes | | **Saturation Current ($I_{sat}$)** | 62 Amperes (at 25°C) | | **DC Resistance (DCR)** | 0.44 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 8.0mm x 5.0mm (Surface Mount) | --- ## 2. Key Features * **High Current Density:** Capable of handling very high peak currents (up to 62A) relative to its small footprint. * **Low DCR:** The extremely low DC resistance (measured in milliohms) minimizes power loss and heat generation, increasing overall system efficiency. * **Ferrite Core Material:** Uses a high-frequency ferrite material that ensures low core losses in MHz-range switching applications. * **Shielded Construction:** The design minimizes Electromagnetic Interference (EMI) to surrounding components. --- ## 3. Application Use Cases This component is typically found in high-performance computing environments: 1. **Multi-phase Buck Converters:** Used as the output inductor for CPU/GPU power stages. 2. **Voltage Regulator Modules (VRM):** Critical for modern motherboards and server blades. 3. **Data Storage:** Powering high-speed SSD controllers and enterprise storage arrays. 4. **Networking:** High-current power supplies for FPGAs and ASICs. --- ## 4. Part Number Breakdown ```text FP 0805 R1 - R10 - R | | | | | | | | | +-- RoHS Compliant | | | +------- Inductance Value: R10 = 0.10µH (100nH) | | +------------- Version/Series Revision | +------------------ Size Dimensions (approx. 8.0 x 5.0 mm) +----------------------- Product Family (High Frequency Inductor) ```