The part number **47LPQ-A0W-R/Q** typically refers to a specialized electronic component, often associated with high-frequency magnetic components or custom power inductors/transformers used in automotive or industrial power electronics. Below is a breakdown of the technical characteristics and specifications generally associated with this series. --- ### 1. Component Overview The **47LPQ** series usually represents **Planar Transformers** or **High-Power Inductors**. These are designed for applications where space is limited (low profile) and high efficiency is required. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Planar Magnetic (Inductor/Transformer) | | **Mounting Type** | Surface Mount (SMD) or Through-Hole (TH) | | **Core Material** | High-frequency Ferrite | | **Configuration** | LPQ (Low Profile Quad) | | **Compliance** | RoHS Compliant, Lead-Free | --- ### 2. Part Number Breakdown (Nomenclature) While exact coding can vary by manufacturer (such as Pulse Electronics or Coilcraft), the suffix structure generally follows this logic: * **47LPQ**: The base series code. "LPQ" signifies a **Low Profile** design with a specific core geometry (often a square or rectangular planar core). * **A0W**: Internal design code representing the winding ratio, inductance value, or specific pinout configuration. * **R/Q**: * **R**: Often indicates "RoHS Compliant." * **Q**: Frequently denotes **AEC-Q200** qualification, meaning the part is tested for automotive-grade reliability (stress resistance, temperature cycling). --- ### 3. Key Technical Advantages Planar technology differs from traditional wire-wound components in several ways: 1. **Low Profile:** The height is significantly reduced compared to traditional wire-wound bobbins, making it ideal for slim rack-mounted servers or thin power modules. 2. **Thermal Management:** The flat surface area of the core and windings allows for better heat dissipation and easier attachment to heat sinks. 3. **Consistency:** Because the windings are often made of PCB traces or stamped copper lead frames, the parasitic capacitance and leakage inductance are highly predictable. 4. **High Power Density:** Capable of handling high currents in a small footprint. --- ### 4. Common Applications These parts are typically found in high-reliability power conversion stages: * **DC/DC Converters:** Used in electric vehicle (EV) onboard chargers. * **Telecommunications:** Powering 5G base stations and networking hardware. * **Aerospace:** Where weight and volume are critical constraints. * **Industrial Power Supplies:** High-efficiency switch-mode power supplies (SMPS). ---