The **FP1008R2-R12-R** is a high-current, shielded drum core power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the FP1008 series, which is specifically designed for high-frequency, high-power density applications like multi-phase Voltage Regulator Modules (VRMs). --- ### ## Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 120 nH (0.12 µH) | | **Tolerance** | ±10% | | **Saturation Current ($I_{sat}$)** | 85 A (at 25°C) | | **RMS Current ($I_{rms}$)** | 71 A | | **DC Resistance (DCR)** | 0.17 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 10.2mm x 8.0mm x 8.0mm (SMD) | --- ### ### Key Features and Construction 1. **High Current Handling:** With a saturation current of 85A and a very low DCR (0.17 mΩ), this part is designed to minimize power loss and heat generation during high-current operations. 2. **Ferrite Core Material:** The core is made of a high-frequency ferrite material that ensures low core losses, making it ideal for switching frequencies up to several megahertz (MHz). 3. **Shielded Design:** The inductor is magnetically shielded, which reduces Electromagnetic Interference (EMI) and prevents the magnetic field from interfering with neighboring components on the PCB. 4. **Flat-Pac™ Technology:** The "FP" prefix stands for Flat-Pac, a proprietary design that optimizes the footprint-to-height ratio for high-density power applications. --- ### ### Common Applications * **Computing & Servers:** Used in VRMs and DC-DC converters for CPUs, GPUs, and ASICs. * **Networking:** Powering high-speed routers, switches, and base stations. * **Data Centers:** High-current Point-of-Load (PoL) modules. * **Industrial:** High-efficiency power supplies and motor controllers. --- ### ### Decoding the Part Number: `FP1008R2-R12-R` | Segment | Meaning | | :--- | :--- | | **FP** | Product Family (Flat-Pac) | | **1008** | Size Dimensions (approx. 10mm x 8mm) | | **R2** | Revision or variation code | | **R12** | Inductance value (R12 = 0.12 µH) | | **-R** | RoHS compliant / Lead-free |