The **FP0906R1-R30-R** is a high-current, shielded drum core power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the FP0906 series, which is specifically designed for high-frequency, high-current power applications. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's specifications: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **FP0906** | Product Series | Family of high-current inductors (9.1mm x 6.4mm footprint) | | **R1** | Revision/Variation | Indicates the specific internal design version | | **R30** | Inductance Value | **0.30 µH** (R denotes decimal point) | | **-R** | RoHS Compliant | Lead-free and environmental regulation compliant | --- ### 2. Key Technical Specifications Below are the typical electrical characteristics for this specific part: | Parameter | Value | | :--- | :--- | | **Inductance ($L$)** | 0.30 µH (±10%) | | **Saturation Current ($I_{sat}$)** | ~55 Amperes (Peak) | | **RMS Current ($I_{rms}$)** | ~40 Amperes (Continuous) | | **DC Resistance (DCR)** | ~0.42 mΩ (Typical) | | **Operating Temp** | -40°C to +125°C | | **Package Size** | 9.1mm x 6.4mm x 6.0mm | --- ### 3. Core Features & Technology * **High Current Density:** The part uses a flat-wire winding construction, which minimizes DC resistance (DCR) and allows for massive current flow in a small physical volume. * **Low Core Loss:** It utilizes a Ferrite core material optimized for high-frequency switching (up to 2MHz or more), making it highly efficient. * **Shielded Construction:** The closed magnetic circuit minimizes Electromagnetic Interference (EMI), which is critical for dense PCB layouts. * **Vertical Mount:** The "R1" variation often refers to the specific lead-frame orientation designed for surface mount (SMD) pick-and-place machines. --- ### 4. Common Applications This inductor is typically found in the power stages of high-performance computing hardware: 1. **Multi-phase Vcore Regulators:** Used in CPU/GPU power delivery for servers and gaming PCs. 2. **Voltage Regulator Modules (VRM):** High-speed point-of-load (POL) converters. 3. **Data Centers:** Distributed power systems requiring high efficiency and small footprints. ---