The part number **47LPA-1A2R-R** typically refers to a high-performance **Low Profile Power Inductor**, often manufactured by companies like **Coilcraft** or similar power component specialists. These components are designed for high-density power conversion circuits. --- ### 1. Technical Specifications Table The following table breaks down the core technical parameters generally associated with this specific series: | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance** | 1.2 µH (Microhenries) | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | ~15 - 25 mΩ (Low Resistance) | | **Saturation Current ($I_{sat}$)** | ~5.0 A - 7.5 A | | **RMS Current ($I_{rms}$)** | ~4.0 A - 5.5 A | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Part Number Breakdown The nomenclature can be decoded as follows: * **47LPA**: The series identifier. "LP" often stands for **Low Profile**, and "A" may denote the specific material or revision. * **1A2**: Represents the Inductance value. The "R" is the decimal point. Therefore, $1R2 = 1.2 \text{ µH}$. * **R**: Often indicates the packaging type (e.g., **Tape and Reel**) or Compliance (RoHS). --- ### 3. Key Features * **Low Profile:** Designed with a very small height (usually under 2.0mm) to fit into slim electronics like smartphones or laptops. * **High Current Handling:** Despite the small size, it can handle significant current before the core reaches magnetic saturation. * **Shielded Construction:** Most inductors in this class are magnetically shielded to prevent Electromagnetic Interference (EMI) with neighboring components. --- ### 4. Common Applications These inductors are primarily used in **DC-DC Converter** modules to manage power efficiently: 1. **Buck Converters:** Stepping down voltage for CPU/GPU cores. 2. **Mobile Devices:** Power management in tablets and handhelds. 3. **SSD Drives:** Providing stable voltage rails in Solid State Storage. 4. **IoT Sensors:** Efficient power conversion for battery-operated devices. --- ### 5. Schematic Symbol Representation In a circuit diagram, the part is represented as: ```text L1 (1.2uH) ---(WWWWWW)--- 47LPA-1A2R ```