The **FP1006R1-R12-R** is a high-current, non-isolated power inductor typically used in multi-phase voltage regulator modules (VRMs). It is manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 120 nH (0.12 µH) | | **Tolerance** | ±10% | | **DC Resistance (DCR)** | 0.29 mΩ (Typical) | | **Saturation Current ($I_{sat}$)** | 85 A | | **RMS Current ($I_{rms}$)** | 71 A | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Core Features and Construction * **Flat-Pac™ Technology:** The "FP" prefix denotes Eaton's proprietary Flat-Pac design, which utilizes a flat-wire winding construction. This reduces skin effect losses and allows for a very low profile. * **High Power Density:** Due to its very low DCR ($0.29 \text{ m}\Omega$), it minimizes power dissipation (heat) even when carrying currents exceeding 70 Amps. * **Ferrite Core:** It uses a high-frequency ferrite material that provides stable inductance up to 2 MHz, making it ideal for modern high-speed switching converters. * **Halogen Free & RoHS Compliant:** The "-R" suffix indicates compliance with environmental standards and lead-free manufacturing. --- ### 3. Application Areas The FP1006 series is specifically engineered for high-current circuitry where space is limited and efficiency is critical: 1. **Multi-phase Buck Converters:** Used in CPU/GPU power delivery on motherboards and server cards. 2. **Voltage Regulator Modules (VRM):** Critical for stepping down high currents to low voltages (e.g., 12V to 1V). 3. **Data Center Infrastructure:** Powering high-end networking switches and storage systems. 4. **Point of Load (POL) Converters:** Providing localized power for FPGAs and ASICs. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **FP1006:** Series designation (Physical size: approx. 10.2mm x 8.0mm x 6.0mm). * **R1:** Design Revision code. * **R12:** Inductance value ($R12 = 0.12 \mu H$). * **-R:** RoHS compliant.