The **FP1505R1-R10-R** is a high-current, flat-pac power inductor designed by Eaton (formerly Cooper Bussmann). It is primarily used in high-density power conversion applications. --- ## 1. Technical Specifications The part number itself follows a specific nomenclature that defines its physical and electrical characteristics. | Parameter | Specification | | :--- | :--- | | **Inductance** | 100 nH (0.10 µH) | | **Full Part Number** | FP1505R1-R10-R | | **Tolerance** | ±10% | | **Current Rating (Irms)** | 65 Amps | | **Saturation Current (Isat)** | 95 Amps (at 25°C) | | **DC Resistance (DCR)** | 0.23 mΩ (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ## 2. Key Features * **High Current Density:** The "Flat-Pac" design allows for extremely high current carrying capacity in a small footprint. * **Low DCR:** The extremely low DC resistance (0.23 mΩ) minimizes power loss and heat generation, increasing overall system efficiency. * **Ferrite Core Material:** Uses a ferrite core which provides low core losses at high frequencies, making it ideal for modern switching regulators. * **Vertical Design:** The "R1" designation often refers to a specific lead frame or orientation that optimizes vertical space and airflow. --- ## 3. Applications This inductor is typically found in high-performance computing environments where stable voltage and high current are required: * **Multi-phase Buck Regulators:** Used in VRMs (Voltage Regulator Modules) for CPUs and GPUs. * **Servers & Data Centers:** Powering high-end processors. * **Networking Equipment:** High-speed routers and switches. * **DC-DC Converters:** Point-of-Load (POL) modules. --- ## 4. Part Number Breakdown The naming convention is structured as follows: * **FP:** Flat-Pac Series. * **1505:** Physical dimensions (approx. 15mm x 5mm footprint). * **R1:** Revision or internal designator for the lead frame style. * **R10:** Inductance value (R10 = 0.10 µH). * **-R:** RoHS compliant.