The **47LPT-142B-R** is a specific electronic component typically categorized as a **Low Profile, Surface Mount (SMT) Power Inductor**. It is widely used in power management circuits where vertical space is limited. --- ### 1. General Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics. | Feature | Description | | :--- | :--- | | **Component Type** | Power Inductor | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Series** | 47LPT (Low Profile Toroid/Power) | | **Core Material** | Ferrite or Powdered Iron (Application dependent) | | **RoHS Status** | Compliant (Indicated by the "-R" suffix) | --- ### 2. Key Technical Characteristics Inductors in the 47LPT series are designed for efficiency in DC-DC conversion. * **Low Profile:** The "LPT" designation highlights its low height, making it ideal for thin electronics like tablets, laptops, and slim power modules. * **High Current Handling:** These parts are engineered to handle significant saturation currents without the inductance dropping off sharply. * **EMI Shielding:** Most variants in this series are shielded to minimize Electromagnetic Interference (EMI) with surrounding sensitive components. * **Low DCR:** It features low Direct Current Resistance (DCR), which minimizes power loss through heat (I²R loss). --- ### 3. Common Applications Due to its form factor and electrical stability, the 47LPT-142B-R is commonly found in: 1. **Switching Regulators:** Used as an energy storage element in Buck, Boost, or Buck-Boost converters. 2. **Voltage Regulator Modules (VRMs):** Found on motherboards and GPU power phases. 3. **Battery Powered Devices:** Used in handheld devices where efficiency is critical to extending battery life. 4. **LED Drivers:** Providing stable current for lighting applications. --- ### 4. Part Number Breakdown (Typical) While manufacturers vary slightly, the code generally breaks down as follows: | Code Segment | Meaning | | :--- | :--- | | **47** | Series Identifier / Manufacturer Family | | **LPT** | Low Profile Toroid / Power Technology | | **142** | Inductance Value (Often 1.4 µH or a code for physical size) | | **B** | Tolerance or Internal Revision code | | **-R** | Lead-Free / RoHS Compliant | ---