The **FP1308-R26-R** is a high-performance, high-current power inductor typically used in DC-DC converters and voltage regulator modules (VRMs). It is manufactured by **Eaton (formerly Cooper Bussmann)** as part of their FP1308 series. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the FP1308-R26-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.26 µH (Microhenries) | | **Current Rating (Irms)** | 54 Amps (Continuous) | | **Saturation Current (Isat)** | 82 Amps (Peak before core saturation) | | **DC Resistance (DCR)** | 0.35 mΩ (Milliohms) typical | | **Tolerance** | ±10% | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD) | | **Dimensions** | 13.4mm x 8.0mm x 8.0mm | --- ### ### Key Features 1. **High Current Handling:** Designed specifically for multi-phase buck converters that power high-performance CPUs and GPUs. 2. **Ultra-Low DCR:** The extremely low resistance (0.35 mΩ) minimizes power loss due to heat, significantly improving the efficiency of the power supply. 3. **Ferrite Core Material:** Uses a ferrite core construction which ensures low core losses at high switching frequencies. 4. **Flat-Wire Design:** The internal winding uses flat wire technology, which allows for a larger surface area in a smaller footprint, reducing the "Skin Effect" at high frequencies. --- ### ### Common Applications * **Computing:** Multi-phase Vcore regulators for servers and desktop workstations. * **Networking:** High-current power supplies for switches and routers. * **Graphics Cards:** Voltage regulation for high-end GPUs. * **Industrial:** Point-of-Load (POL) converters requiring high efficiency in a compact space. --- ### ### Part Number Breakdown The part number **FP1308-R26-R** can be decoded as follows: * **FP:** Flat-Pac™ Series (Product Family). * **1308:** Physical dimensions (roughly 13mm length, 8mm height). * **R26:** Inductance value (R represents the decimal point; 0.26 µH). * **-R:** RoHS compliant.