The **FP1107R2-R23-R** is a high-current, non-isolated power inductor specifically designed for use in multi-phase regulators, voltage regulator modules (VRMs), and high-density DC-DC converters. It is manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Specification | |:---|:---| | **Inductance** | 230 nH (0.23 µH) | | **Tolerance** | ±10% | | **DC Resistance (DCR)** | 0.29 mΩ (Typical) | | **Saturation Current ($I_{sat}$)** | 61 A (at 25°C) | | **Irms (Heating Current)** | 51 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 11.0mm x 7.2mm x 7.5mm (SMD) | | **Core Material** | Ferrite | --- ### 2. Key Features and Construction * **High Current Density:** The flat-wire construction and ferrite core allow it to handle very high currents (up to 61A) with minimal core losses. * **Low DCR:** The extremely low DC resistance (0.29 mΩ) ensures high efficiency by minimizing power dissipation as heat. * **Tight Tolerance:** The "R2" series indicates a specific mechanical footprint and height profile optimized for dense PCB layouts. * **Vertical Mount Design:** The "FP" (Flat-Pac) series often utilizes a design that minimizes the PCB footprint while utilizing vertical space. --- ### 3. Application Use Cases This specific inductor is commonly found in the following electronic circuits: 1. **Server CPU Power:** Multi-phase buck converters powering modern processors (Intel/AMD). 2. **Graphics Cards (GPUs):** High-speed voltage regulation for high-performance computing. 3. **Data Centers:** High-current DC-DC modules and Point-of-Load (PoL) converters. 4. **Networking:** Powering ASICs and FPGAs in high-speed switches and routers. --- ### 4. Part Number Breakdown The nomenclature can be interpreted as follows: * **FP1107:** Series name (Flat-Pac, 11x7mm footprint). * **R2:** Revision/mechanical variation. * **R23:** Inductance value (R23 = 0.23 µH). * **-R:** RoHS compliant. ---