## Technical Overview of FP1108L1-R180-R The **FP1108L1-R180-R** is a high-current, low-profile Power Inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the FP1108 series, which is specifically designed for multi-phase Voltage Regulator Modules (VRMs) and high-current point-of-load converters. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 180 nH (0.180 µH) | | **Full Part Number** | FP1108L1-R180-R | | **Tolerance** | ±10% | | **Current Rating (Irms)** | 52 Amps | | **Saturation Current (Isat)** | 56 Amps | | **DC Resistance (DCR)** | 0.28 mΩ (typical) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 11.0mm x 8.0mm x 8.0mm | --- ### 2. Core Features and Construction * **High Frequency Performance:** Optimized for switching frequencies up to 2MHz, making it ideal for modern high-speed power stages. * **Low DCR (DC Resistance):** The vertical conductor design ensures extremely low resistance, which minimizes power loss and improves efficiency in high-current applications. * **Ferrite Core Material:** Utilizes a ferrite core construction which offers low core losses and stable performance over a wide temperature range. * **Surface Mount Design:** The "L1" footprint indicates a specific pad layout designed for automated SMT (Surface Mount Technology) assembly. --- ### 3. Applications This component is typically found in environments requiring high power density and efficient heat management: 1. **Computing:** Multi-phase buck converters for CPU/GPU power (Vcore) in servers and workstations. 2. **Networking:** Power supplies for switches, routers, and base stations. 3. **Graphics Cards:** High-end GPUs that require significant current levels with minimal voltage ripple. 4. **Voltage Regulator Modules (VRMs):** Used as the primary energy storage element in the output stage of the regulator. --- ### 4. Part Number Breakdown * **FP:** Series Code (Flat-Pac Inductor) * **1108:** Physical Dimensions (Approx. 11mm x 8mm) * **L1:** Terminal configuration/Variation * **R180:** Inductance value (R = decimal point; 180 = 0.180 µH) * **-R:** RoHS compliant