### Overview of FP1008R2-R120-R The **FP1008R2-R120-R** is a high-current, low-profile power inductor typically used in multi-phase voltage regulator modules (VRMs). It is part of the FP1008 series manufactured by **Eaton (formerly Cooper Bussmann/Coiltronics)**. --- ### Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 120 nH (0.12 µH) | | **Tolerance** | ±10% | | **Rated Current ($I_{rms}$)** | 68 Amps | | **Saturation Current ($I_{sat}$)** | 91 Amps (at 25°C) | | **DC Resistance (DCR)** | 0.17 mΩ (max) | | **Operating Temperature** | -40°C to +125°C | | **Package/Case** | 10.2 x 8.0 x 8.0 mm (SMD) | --- ### Core Electronic Characteristics #### 1. High Saturation Current ($I_{sat}$) With a saturation current of **91A**, this inductor is designed to handle massive current spikes without the magnetic core "saturating." When saturation occurs, inductance drops sharply; this part is engineered to maintain stability even under heavy loads. #### 2. Ultra-Low DCR The DC resistance is exceptionally low (**0.17 mΩ**). This is critical for: * **Efficiency:** Minimizing power loss as heat ($P = I^2R$). * **Thermal Management:** Reducing the temperature rise of the component during operation. #### 3. Ferrite Core Material The "FP" series uses a ferrite core, which provides: * Low core losses at high frequencies. * Stable performance in high-speed switching power supplies (typically >500 kHz). --- ### Applications These inductors are primarily found in high-performance computing environments where high current and low voltage are required: * **Multi-phase VRMs/Vcore:** Powering CPUs, GPUs, and ASICs. * **Servers and Data Centers:** High-density power modules. * **Networking Equipment:** High-speed routers and switches. * **Point-of-Load (POL) Converters:** Step-down (Buck) converters for local power distribution. --- ### Physical Construction The **1008** designation refers to the physical footprint (approximately 10mm x 8mm). The **R2** indicates the version/generation, and the **R** suffix denotes RoHS compliance. The component features a surface-mount design with robust leads capable of carrying the rated 68A continuous current.