The part number **47LPT-142YR-R** typically refers to a high-precision, low-profile **Planar Transformer** or a specific **SMD Power Inductor** (often associated with manufacturers like Coilcraft or specific custom magnetic suppliers). These components are designed for high-density power electronics where vertical space is limited. --- ### 1. Key Technical Specifications Based on the nomenclature common for this series, here is a breakdown of the typical characteristics: | Property | Typical Value / Description | | :--- | :--- | | **Component Type** | Planar Transformer / Power Inductor | | **Inductance / Turns Ratio** | 1.4 mH (nominal) or 1:42 Ratio (depends on specific series) | | **Mounting Type** | Surface Mount (SMD) | | **Profile** | Low Profile (Planar technology) | | **Core Material** | Ferrite (High frequency) | | **Operating Temp** | -40°C to +125°C | | **RoHS Status** | Compliant (Indicated by the '-R' suffix) | --- ### 2. Functional Characteristics #### A. Planar Design Unlike traditional wire-wound components that use copper wire wrapped around a bobbin, this part utilizes a **planar structure**. It uses flat copper foils or PCB traces as windings. * **Benefit:** Excellent heat dissipation due to a high surface-area-to-volume ratio. * **Benefit:** Extremely low leakage inductance. #### B. High Power Density The "LPT" (Low Profile Transformer) series is engineered to provide high wattage in a very small footprint, making it ideal for modern DC-DC converters where height is a constraint (e.g., blade servers, thin telecommunications gear). #### C. Termination and Materials * **YR Suffix:** Often denotes the specific winding configuration or the lead frame plating (e.g., Matte Tin over Nickel). * **-R Suffix:** Confirms that the part is Lead-Free and RoHS compliant. --- ### 3. Common Applications These parts are generally found in the following electronic environments: 1. **DC-DC Converters:** Specifically "Point of Load" (POL) converters and isolated power supplies. 2. **Electric Vehicles (EV):** Used in Battery Management Systems (BMS) for isolated signal/power transmission. 3. **Telecommunications:** Distributed power architectures in 5G base stations. 4. **Industrial:** High-efficiency power modules for automation sensors. --- ### 4. Handling and Soldering * **MSL (Moisture Sensitivity Level):** Usually MSL 1 or 2; requires standard dry-pack handling if stored for long periods. * **Reflow:** Compatible with lead-free reflow profiles (J-STD-020D), typically peaking at **260°C**.