Based on the part number **47LPQ-4W0B-R**, this component is a specific type of **Low Profile Inductor** (often from the 47L series) commonly used in power management and DC-DC converter applications. --- ## 1. Component Overview The "47LPQ" series typically refers to shielded, surface-mount (SMD) power inductors designed for high-density electronic circuits where vertical space is limited. ### Technical Specifications | Feature | Description | | :--- | :--- | | **Component Type** | Fixed Power Inductor | | **Series** | 47LPQ (Low Profile / High Q) | | **Shielding** | Magnetically Shielded (reduces EMI) | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **RoHS Status** | Compliant (Indicated by the "-R" suffix) | --- ## 2. Part Number Breakdown While specific manufacturer numbering can vary slightly, the code generally follows this logic: 1. **47LPQ**: The series identifier. "LPQ" often stands for **Low Profile, High Q-factor**. 2. **4W0B**: Represents the inductance value and tolerance. * **4W0**: Often signifies a 4.0 µH (microhenry) inductance. * **B**: Usually indicates the tolerance rating (e.g., ±0.1nH or a specific percentage depending on the manufacturer). 3. **-R**: Indicates **RoHS compliance** (Lead-free) and often signifies Tape & Reel packaging. --- ## 3. Key Characteristics * **High Current Capability:** Designed to handle significant DC currents without saturating the core. * **Low DC Resistance (DCR):** Minimizes power loss and heat generation, increasing efficiency in battery-operated devices. * **EMI Suppression:** The shielded construction prevents magnetic flux from interfering with neighboring components. * **Compact Footprint:** The "Low Profile" designation means it is thin, making it ideal for smartphones, laptops, and slim IoT devices. --- ## 4. Typical Applications These inductors are primarily used in: * **DC-DC Converters:** Point-of-Load (POL) power supplies. * **Voltage Regulator Modules (VRMs):** Found in CPUs and GPUs. * **Portable Electronics:** Tablets, smartphones, and handheld medical devices. * **Filtering:** Decoupling and noise suppression in high-speed data lines. ---