The part number **47LPQ-50B-R/Q** typically refers to a high-frequency, low-profile power inductor or a specific magnetic component (often manufactured by companies like Sumida or similar magnetic specialists). These are designed for space-constrained power management circuits. ### 1. Component Overview The "47LPQ" series is characterized by its **Low Profile (LP)** and **Quality (Q)** standards, often intended for high-density DC-DC converter applications. | Feature | Description | | :--- | :--- | | **Component Type** | Surface Mount Power Inductor / Transformer | | **Series** | 47LPQ (Low Profile Quad/Power) | | **Mounting Type** | SMD (Surface Mount Device) | | **Core Material** | Ferrite (High efficiency, low core loss) | | **Application** | Switching regulators, VRMs, and portable electronics | --- ### 2. Breakdown of the Part Number While specific manufacturer datasheets may vary slightly, the nomenclature usually follows this logic: * **47:** Base series identifier (often relating to physical dimensions or base design). * **LPQ:** **L**ow **P**rofile, **Q**uality/High Frequency optimized. * **50B:** Refers to the inductance value or a specific design iteration. In many naming conventions, "50" might represent $5.0\mu H$ or a size code. * **R/Q:** * **R:** Usually denotes **RoHS Compliant** (Lead-free). * **Q:** Often signifies **AEC-Q200** qualification (Automotive grade) or a specific tolerance/packaging standard. --- ### 3. Electrical & Physical Characteristics These parts are engineered for performance in modern power stages: * **Low DCR (DC Resistance):** Designed to minimize power loss as heat, increasing overall battery life in mobile devices. * **High Saturation Current:** The "LPQ" design ensures the inductor can handle high peak currents without the magnetic field collapsing (saturating). * **Shielded Construction:** Most components in this category are magnetically shielded to prevent Electromagnetic Interference (EMI) with neighboring sensitive components. --- ### 4. Common Applications | Sector | Typical Use Case | | :--- | :--- | | **Computing** | CPU/GPU voltage regulation modules (VRM). | | **Automotive** | Infotainment systems and ADAS sensors (if Q-rated). | | **Telecom** | Compact DC-DC converters in 5G base stations. | | **Consumer** | High-end tablets and ultra-thin laptops. |