The part number **47LAC-152B-R** typically refers to a **High-Current Power Inductor**, often manufactured by companies like Chilisin or similar electronic component suppliers. These are surface-mount devices (SMD) designed for power management circuits. --- ### ## Technical Specifications Below are the typical specifications associated with this series of inductors: | Feature | Specification (Typical) | | :--- | :--- | | **Inductance** | 1.5 µH (Microhenries) | | **Tolerance** | ±20% (indicated by 'M' or internal codes) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Current Rating** | High Saturation Current (usually 5A - 15A range) | | **Shielding** | Magnetically Shielded | | **Construction** | Metal Alloy or Ferrite Core | --- ### ## Breakdown of the Part Number While naming conventions vary slightly by manufacturer, the code generally follows this logic: * **47L**: Represents the series (Large current/Low profile). * **AC**: Often indicates the physical size/footprint (e.g., 4.0mm x 4.0mm or similar). * **152**: The inductance value. The first two digits are significant figures, and the third is the multiplier (15 + two zeros = 1500 nH = **1.5 µH**). * **B**: Tolerance or specific material grade. * **R**: Generally signifies "RoHS Compliant" or "Tape & Reel" packaging. --- ### ## Key Applications These inductors are used in circuits where high efficiency and high current handling are required in a small footprint: 1. **DC-DC Converters:** Used as the energy storage element in buck, boost, or buck-boost regulators. 2. **Power Modules:** Found in CPU and GPU power supplies for laptops and tablets. 3. **Battery Powered Devices:** Ideal for smartphones and IoT devices due to low DC resistance (DCR). 4. **Automotive Electronics:** Used in infotainment and ADAS systems if AEC-Q200 qualified. ### ## Core Features * **Low DCR:** Minimizes power loss as heat, increasing battery life. * **High Saturation:** Maintains inductance even when high current peaks occur. * **Magnetic Shielding:** Reduces Electromagnetic Interference (EMI) with neighboring components on the PCB.