The **FP1005R3-R22-R** is a high-performance, high-current power inductor typically used in voltage regulator modules (VRMs) and DC-DC converters. It is manufactured by Eaton (formerly Cooper Bussmann). --- ### 1. Technical Specifications The following table summarizes the primary electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 220 nH (0.22 µH) | | **Tolerance** | ±10% | | **DC Resistance (DCR)** | 0.29 mΩ (Typical) | | **Saturation Current ($I_{sat}$)** | 61 A | | **RMS Current ($I_{rms}$)** | 53 A | | **Package Size** | 10.0mm x 5.0mm x 5.0mm | | **Mounting Type** | Surface Mount (SMD) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **FP1005**: Series designation (Flat-Pac). The numbers 1005 represent the footprint dimensions (approx. 10mm x 5mm). * **R3**: Refers to the internal version or revision of the design (often relating to the core material or winding style). * **R22**: Represents the inductance value. "R" acts as the decimal point; thus, R22 = 0.22 µH. * **-R**: Indicates that the part is RoHS compliant. --- ### 3. Key Features & Applications This specific inductor is designed for high-frequency power electronics where space is limited and efficiency is critical. #### Key Features: * **High Current Density:** Capable of handling over 60A of peak current despite its small footprint. * **Low DCR:** The extremely low DC resistance (measured in micro-ohms) minimizes power loss due to heat ($I^2R$ losses). * **Ferrite Core Material:** Ensures low core losses at high switching frequencies. #### Typical Applications: 1. **Multi-phase Vcore regulators:** Found in servers and high-end desktop motherboards to power CPUs and GPUs. 2. **Voltage Regulator Modules (VRM):** Used for point-of-load (POL) power conversion. 3. **Data Storage:** Powering high-speed enterprise SSDs and networking equipment. --- ### 4. Footprint and Land Pattern Since this is an SMD component, the land pattern is critical for thermal dissipation and electrical performance. ```markdown Recommended Pad Layout (Top View): ________________________ | [PAD] (gap) [PAD] | | 3.5 3.0 3.5 | (mm) |________________________| ``` *Note: It is highly recommended to use heavy copper traces (2oz or higher) to handle the 50A+ current capacity of this inductor.*