The **47LV-101R-R** is a specific type of electronic component, typically categorized as a **Surface Mount Device (SMD) Power Inductor**. It is widely used in power management circuits to store energy in a magnetic field. --- ### 1. Technical Specifications The part number follows a standard nomenclature used by manufacturers (often associated with brands like Sumida or similar magnetic component specialists). | Feature | Specification (Typical) | | :--- | :--- | | **Inductance** | 100 µH (Indicated by "101") | | **Tolerance** | ±20% (Standard for "M" or generic series) | | **Package Type** | SMD (Surface Mount Device) | | **Shielding** | Usually Shielded (to prevent EMI) | | **Mounting Type** | PCB (Printed Circuit Board) | --- ### 2. Decoding the Part Number The alphanumeric string provides specific details about the component's physical and electrical properties: 1. **47LV**: This usually refers to the **Series** or **Case Size**. It defines the physical dimensions (length, width, and height) of the inductor. 2. **101**: This is the **Inductance Code**. * The first two digits (10) are the significant figures. * The third digit (1) is the multiplier ($10^1$). * Calculation: $10 \times 10 = 100$ µH. 3. **R**: Often indicates the **Tolerance** or a specific material characteristic. 4. **-R**: Typically stands for **RoHS Compliant** (Lead-free). --- ### 3. Key Functions in a Circuit Inductors like the 47LV-101R-R serve several critical roles: * **Energy Storage:** In DC-DC converters (Buck or Boost), it stores energy during the "on" cycle and releases it during the "off" cycle. * **Filtering:** It blocks high-frequency AC noise while allowing DC to pass, smoothing out voltage ripples. * **Impedance Matching:** Used in RF or signal processing to match the impedance between different stages of a circuit. --- ### 4. Common Applications Due to its 100 µH inductance and SMD footprint, this part is commonly found in: * **Power Supplies:** Laptop chargers, desktop VRMs. * **Consumer Electronics:** LED TV backlight drivers, gaming consoles. * **Telecommunications:** Base station power modules and routers. --- ### 5. Example Schematic Representation ```spice * Simple Buck Converter Representation Vin 1 0 DC 12V S1 1 2 3 0 Switch D1 0 2 Diode L1 2 4 100uH <-- (47LV-101R-R) C1 4 0 100uF Rload 4 0 10 ```