### Electronic Specifications for FP1005R1-R15-R The **FP1005R1-R15-R** is a high-frequency, high-current power inductor typically used in multi-phase voltage regulator modules (VRMs). It is part of the Cooper Bussmann (Eaton) FP1005R1 series, known for its "Flat-Pac" design. --- ### Technical Specifications Table | Parameter | Value / Specification | | :--- | :--- | | **Inductance ($L$)** | 150 nH (0.150 µH) | | **Inductance Tolerance** | ±10% | | **DCR (Direct Current Resistance)** | 0.42 mΩ (0.00042 Ohms) | | **Rated Current ($I_{rms}$)** | 40 Amperes | | **Saturation Current ($I_{sat}$)** | 61 Amperes (at 25°C) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 10.2mm x 7.0mm x 4.95mm | | **Mounting Type** | Surface Mount (SMD) | --- ### Key Features and Applications #### 1. Low DCR Design The exceptionally low DCR (0.42 mΩ) minimizes conduction losses, which is critical for maintaining high efficiency in high-current power supplies like those found in servers and workstations. #### 2. High Current Capability With a saturation current of **61A**, this inductor can handle significant current spikes without the magnetic core saturating (losing its inductive properties). #### 3. Common Applications * **Voltage Regulator Modules (VRMs):** Found on motherboards and GPU power delivery circuits. * **DC-DC Converters:** Point-of-load (POL) modules. * **Data Centers:** High-density power supplies for servers. --- ### Part Number Breakdown The part number follows a specific nomenclature: * **FP1005:** Series name (Flat-Pac, 10.2 x 7.0mm footprint). * **R1:** Version/Revision code (typically related to internal structure or DCR). * **R15:** Inductance value (R = decimal point; 0.15 µH). * **R:** Packaging code (Tape and Reel).