Based on the part number provided, this component belongs to the **47LLC Series**, which are specialized **Power Inductors** typically manufactured by companies like Chilisin or similar electronic component vendors. Below is a detailed breakdown of the technical specifications and characteristics for the **47LLC-S151YR-R**. --- ### 1. Technical Specifications Breakdown | Parameter | Value / Description | | :--- | :--- | | **Component Type** | Power Inductor (SMD) | | **Series** | 47LLC (Low Loss Core) | | **Inductance** | 150 µH (indicated by "151") | | **Tolerance** | ±20% (indicated by "M" or "Y" depending on series code) | | **Package Size** | S15 (Specific dimensions vary by manufacturer, approx. 15mm) | | **Mounting Type** | Surface Mount Device (SMD) | | **RoHS Status** | Compliant (indicated by "-R") | --- ### 2. Part Number Nomenclature Understanding the code allows you to identify the specific traits of the part: * **47LLC**: The series name, usually signifying a "Low Loss" design optimized for high-frequency power conversion. * **S15**: Refers to the physical footprint/size of the inductor casing. * **151**: The inductance value. The first two digits (15) are the base value, and the third digit (1) is the multiplier ($10^1$). Hence, $15 \times 10 = 150 \mu H$. * **Y/R**: Tolerance and packaging codes (Tape & Reel). --- ### 3. Key Features * **High Efficiency:** Designed with core materials that minimize "core loss," making them ideal for high-efficiency power supplies. * **High Saturation Current:** These inductors are built to handle significant current peaks without the inductance dropping sharply (saturation). * **Magnetic Shielding:** Most parts in this series are shielded to reduce Electromagnetic Interference (EMI), protecting nearby components from noise. * **Robust Construction:** Designed to withstand high-temperature environments common in automotive or industrial DC-DC converters. --- ### 4. Common Applications These parts are generally found in power management circuits, including: 1. **DC-DC Converters:** Used for voltage regulation in laptops, servers, and industrial PC boards. 2. **LED Drivers:** Providing stable current for high-brightness lighting systems. 3. **Power Supplies:** Used in the filtering stage to smooth out ripples in output voltage. 4. **Automotive Electronics:** Powering infotainment systems or ECU modules. ---