The **FP0708R1-R07-R** is a high-current, shielded drum core power inductor typically used in voltage regulator modules (VRMs) and DC-DC converters. It is manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ### 1. Key Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics. | Parameter | Value | | :--- | :--- | | **Inductance** | 72 nH (0.072 µH) | | **Tolerance** | ±10% | | **DC Resistance (DCR)** | 0.42 mΩ (typical) | | **Saturation Current ($I_{sat}$)** | 85 Amps | | **RMS Current ($I_{rms}$)** | 52 Amps | | **Operating Temperature** | -40°C to +125°C | ### 2. Physical Characteristics This component is designed for high-density power applications where space and thermal management are critical. * **Footprint:** Approximately 7.0mm x 8.0mm. * **Height:** 7.5mm (Max). * **Construction:** Ferrite core material with a "Flat-Pac" design, which minimizes EMI (Electromagnetic Interference) and provides a low profile. * **Termination:** Surface Mount (SMD) with matte tin plating. ### 3. Part Number Breakdown The nomenclature `FP0708R1-R07-R` is interpreted as follows: 1. **FP:** Flat-Pac Series. 2. **0708:** Dimensions (approx. 7mm x 8mm). 3. **R1:** Revision or specific mechanical variation. 4. **R07:** Inductance value (0.07 µH or 70-72 nH). 5. **-R:** RoHS compliant. --- ### 4. Typical Applications Due to its very low inductance and extremely high saturation current, this part is used in: * **Multi-phase buck converters:** Found in PC motherboards and servers. * **Voltage Regulator Modules (VRM):** Powering CPUs, GPUs, and ASICs. * **Point-of-Load (POL) Converters:** High-speed data networking equipment. ### 5. Electrical Behavior * **Low DCR:** The 0.42 mΩ resistance ensures minimal power loss through heat, making it highly efficient. * **Saturation:** The $I_{sat}$ rating of 85A means the inductor can handle massive current spikes before the magnetic core saturates and the inductance drops significantly.