The **FP1008R1-R270-R** is a high-current, shielded drum core inductor specifically designed for use in multi-phase Voltage Regulator Modules (VRMs) and DC-DC converters. It is manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 270 nH (0.27 µH) | | **Tolerance** | ±10% | | **Rated Current (Irms)** | 50 Amps | | **Saturation Current (Isat)** | 85 Amps (at 25°C) | | **DC Resistance (DCR)** | 0.17 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 10.2mm x 8.0mm x 10.0mm (SMD) | | **Termination** | Matte Tin over Copper | --- ### ## Key Features 1. **High Current Density**: Capable of handling very high saturation currents (up to 85A) relative to its small footprint. 2. **Ultra-Low DCR**: The extremely low direct current resistance (0.17 mΩ) minimizes power loss and heat generation, increasing overall system efficiency. 3. **Ferrite Core Material**: Utilizes a ferrite core which provides low core losses at high frequencies, making it ideal for modern high-speed switching regulators. 4. **Shielded Construction**: The magnetic shielding reduces Electromagnetic Interference (EMI), allowing for dense PCB layouts without cross-talk. --- ### ## Common Applications This part is typically found in high-performance computing environments where stable, high-current power delivery is critical: * **Multi-phase Vcore regulators** for CPUs, GPUs, and ASICs. * **Voltage Regulator Modules (VRMs)** in servers and workstations. * **Data networking** and storage systems. * **Point-of-Load (POL)** converters. --- ### ## Part Number Breakdown: `FP1008R1-R270-R` * **FP1008**: Series designation (Flat-Pac family, physical dimensions). * **R1**: Revision or internal designator for the winding style. * **R270**: Inductance value (R = decimal point, so 0.270 µH or 270 nH). * **-R**: RoHS compliant.