## Technical Overview of FP1010R1-R120-R The **FP1010R1-R120-R** is a high-current, shielded drum core inductor specifically designed for high-frequency power conversion applications. It belongs to the **FP1010 series** manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). ### 1. Key Specifications The following table summarizes the primary electrical and physical characteristics of the component: | Parameter | Value | | :--- | :--- | | **Inductance** | 120 nH (0.120 µH) | | **Tolerance** | ±10% | | **DC Resistance (DCR)** | 0.17 mΩ (Typical) | | **Saturation Current ($I_{sat}$)** | 84 Amps | | **RMS Current ($I_{rms}$)** | 50 Amps | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 10.0mm x 10.0mm x 10.0mm | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Core Features & Construction * **High Current Density:** Its vertical orientation and flat-wire construction allow it to handle extremely high saturation currents (84A) relative to its footprint. * **Low DCR:** The extremely low DC resistance (0.17 mΩ) minimizes power loss due to heat, significantly improving the efficiency of the voltage regulator. * **Ferrite Core Material:** Used for high-frequency performance with low core losses. * **Shielded Design:** The part is magnetically shielded to minimize Electromagnetic Interference (EMI) with neighboring components on the PCB. --- ### 3. Common Applications This part is typically found in high-performance power management circuits, including: 1. **Multi-phase Vcore Regulators:** Used in CPU/GPU power delivery for servers and high-end desktops. 2. **Voltage Regulator Modules (VRMs):** Essential for converting high input voltages to stable low-voltage/high-current outputs. 3. **Point-of-Load (POL) Converters:** Used in networking and telecommunications equipment. 4. **Data Centers:** Powering high-speed ASICs and FPGAs. --- ### 4. Part Number Breakdown The naming convention follows this logic: * **FP1010:** Series name (indicates physical dimensions, approx 10x10mm). * **R1:** Revision or internal designator. * **R120:** Inductance value (R = decimal point; 120 = 0.120 µH). * **-R:** RoHS compliant. ---