The **47LCT-102YR-R** is a specific surface-mount (SMD) power inductor, commonly used in power management circuits. It is designed to store energy in a magnetic field to filter or regulate electrical current. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. Technical Specifications Based on standard nomenclature for the **47LCT** series, the specifications are typically as follows: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 1.0 µH (Microhenry) | "102" code: 10 followed by 2 zeros (calculated in nH or standard units). | | **Tolerance** | ±30% | Indicated by the "Y" suffix. | | **Core Material** | Ferrite / Composite | Low-loss material for high-frequency efficiency. | | **Mounting Type** | SMD/SMT | Surface Mount Technology for automated PCB assembly. | | **Shielding** | Shielded | Reduces Electromagnetic Interference (EMI) with nearby components. | | **Packaging** | Tape & Reel | Indicated by the "-R" suffix at the end. | ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying equivalent parts: * **47LCT**: The series designation (usually indicates size/footprint). * **102**: The Inductance value. The first two digits are significant, the third is the multiplier ($10 \times 10^2$ nH = 1,000 nH = 1.0 µH). * **Y**: Tolerance code (standardly ±30%). * **R**: Typically denotes "RoHS Compliant" or "Tape & Reel" packaging. ### 3. Key Features 1. **Low Profile:** These inductors are generally designed with a small height to fit into slim electronics like smartphones or tablets. 2. **High Current Capability:** Designed to handle significant saturation currents without the inductance dropping off sharply. 3. **Magnetic Shielding:** The construction prevents magnetic flux from escaping, which is critical for dense PCB layouts to prevent noise. 4. **Low DC Resistance (DCR):** Minimizes power loss as heat, increasing overall device battery life. ### 4. Common Applications Inductors like the 47LCT-102YR-R are found in: * **DC-DC Converters:** Used in Buck or Boost regulators. * **Mobile Devices:** Power management units (PMICs) for smartphones. * **Laptops/Tablets:** Voltage regulation modules for CPUs and GPUs. * **HDD/SSD:** Power filtering for data storage drives. ---