The **FP0807R1-R22-R** is a high-current, shielded drum core power inductor commonly used in voltage regulator modules (VRMs) and high-density power applications. ### 1. General Specifications This part belongs to the **FP0807 series**, characterized by its small footprint and high current-carrying capacity. | Parameter | Value | | :--- | :--- | | **Inductance** | 0.22 µH (220 nH) | | **Tolerance** | ±10% | | **Current Rating (Irms)** | ~34 A (Typical) | | **Saturation Current (Isat)** | ~55 A (Typical) | | **DC Resistance (DCR)** | ~0.50 mΩ (Max) | | **Dimensions** | 8.2mm x 7.5mm x 7.0mm | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Part Number Breakdown The nomenclature follows a specific structure used by manufacturers like Eaton (Bussmann/Coiltronics): * **FP**: Family code (Flat-Pac series). * **0807**: Physical dimensions (approx. 8.0mm length x 7.0mm height). * **R1**: Revision or internal designator for internal structure/winding. * **R22**: Inductance value (R = decimal point; 0.22 µH). * **R**: RoHS compliant. --- ### 3. Key Electronic Characteristics #### A. High Saturation Current ($I_{sat}$) The "R22" (0.22 µH) version is designed to handle very high peak currents without the magnetic core saturating. This is critical in preventing the inductor from losing its properties during a transient load spike. #### B. Ultra-Low DCR With a DC Resistance of approximately **0.50 mΩ**, this part minimizes $I^2R$ power losses. This results in higher efficiency and lower heat generation in power-dense circuits. #### C. Ferrite Core Material The use of ferrite material ensures low core losses at high frequencies (up to 2 MHz), making it ideal for modern high-speed switching regulators. --- ### 4. Typical Applications * **Voltage Regulator Modules (VRMs):** Used in CPUs, GPUs, and high-end servers. * **Multi-phase Regulators:** Frequently used in arrays to provide massive current to processors. * **Point-of-Load (POL) Converters:** Used in telecommunications and data storage networking. --- ### 5. Footprint (Mechanical Data) ```text [ Top View ] [ Side View ] __________ __________ | | | | | FP0807 | | (7.0mm) | | R22 | |__________| |__________| [__] [__] (8.2mm) ```