## Technical Overview of FP1308R2-R26-R The **FP1308R2-R26-R** is a high-frequency, high-current power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the **FP1308 series**, which is specifically designed for high-density power conversion applications. --- ### 1. Key Technical Specifications Below are the primary electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.26 µH (260 nH) | | **Tolerance** | ±10% | | **Saturation Current ($I_{sat}$)** | ~72 Amperes | | **RMS Current ($I_{rms}$)** | ~54 Amperes | | **DC Resistance (DCR)** | 0.37 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 13.4mm x 8.0mm x 8.0mm | --- ### 2. Core Features * **Flat-Wire Construction:** Uses a rectangular copper wire (flat wire) which reduces skin effect losses at high frequencies and allows for extremely low DCR (DC Resistance). * **High Current Density:** Capable of handling very high peak currents without saturation, making it ideal for modern CPU and GPU power delivery. * **Magnetically Shielded:** The core structure minimizes Electromagnetic Interference (EMI), which is critical for densely packed circuit boards. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets environmental standards. --- ### 3. Common Applications This part is typically found in **Multi-phase Buck Converters** and **Voltage Regulator Modules (VRMs)**. Specific use cases include: 1. **Computing:** Servers, workstations, and high-performance desktops. 2. **Networking:** Switches, routers, and base stations. 3. **Graphics Cards:** Powering high-end GPUs. 4. **DC-DC Converters:** High-current point-of-load (POL) modules. --- ### 4. Part Number Breakdown The part number provides specific details about the component's geometry and performance: `FP` `1308` `R2` `-R26` `-R` * **FP:** Series Prefix (Flat-Pac Inductor). * **1308:** Physical dimensions (roughly 13mm x 8mm footprint). * **R2:** Revision or Core Material type. * **R26:** Inductance value (R26 = 0.26 µH). * **-R:** RoHS compliance suffix. ---