The **FP0708R1-R10-R** is a high-current, shielded drum core power inductor typically used in high-frequency DC-DC converters and voltage regulator modules (VRMs). It belongs to the **FP0708 series** manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ### 1. Part Number Breakdown Understanding the nomenclature is essential for identifying the specific electrical characteristics: | Component Segment | Meaning | Details | | :--- | :--- | :--- | | **FP0708** | Product Series | High-frequency power inductor (approx. 7mm x 8mm footprint). | | **R1** | Revision/Design | Version 1 of the mechanical/electrical design. | | **R10** | Inductance Value | **R10** denotes **0.10 µH** (100 nH). | | **-R** | Compliance | RoHS compliant. | --- ### 2. Technical Specifications The FP0708R1 series is designed for "High-Phase" count power applications where high efficiency and high current handling are required. | Feature | Specification (Typical) | | :--- | :--- | | **Inductance (L)** | 100 nH ± 10% | | **Rated Current (Irms)** | ~40A to 50A (varies by temperature rise) | | **Saturation Current (Isat)** | ~80A to 100A (at 25°C) | | **DC Resistance (DCR)** | Extremely Low (~0.45 mΩ to 0.60 mΩ) | | **Operating Temp** | -40°C to +125°C | | **Frequency Range** | Up to 2 MHz | --- ### 3. Key Electronic Characteristics * **High Current Handling:** Due to its flat-wire construction and ferrite core, it can handle massive surges in current without saturating (losing inductance). * **Low DCR:** The very low DC resistance ensures minimal power loss (heat generation) through the inductor, making it ideal for high-efficiency power supplies. * **Magnetic Shielding:** The "R" series construction provides electromagnetic interference (EMI) shielding, preventing the magnetic field from interfering with nearby sensitive components on the PCB. * **SMD Packaging:** Surface Mount Device design allows for automated pick-and-place assembly. --- ### 4. Common Applications This specific inductor is usually found in power management stages for high-performance computing: 1. **Multi-phase Vcore regulators:** For CPUs and GPUs in servers and workstations. 2. **Voltage Regulator Modules (VRM):** Converting 12V down to <1.5V at very high currents. 3. **Point of Load (POL) converters:** Providing stable power to FPGAs or ASICs.