The part number **47LLC-S201W-R** typically refers to a specialized LED component, often associated with surface-mount (SMD) technology used in indicators, displays, or status lighting. Below is a technical breakdown of its typical characteristics and specifications. --- ### 1. Component Identification | Category | Detail | | :--- | :--- | | **Component Type** | Light Emitting Diode (LED) | | **Package Style** | Surface Mount Device (SMD) | | **Emitting Color** | White (indicated by "W") | | **Mounting Type** | PCB Solder Mount | ### 2. Technical Specifications While specific manufacturers (such as Kingbright or local equivalents) may vary slightly, parts in this series generally follow these parameters: * **Luminous Intensity:** Usually measured in millicandela (mcd), providing high brightness for small-form indicators. * **Viewing Angle:** Typically wide (120° to 140°) to ensure visibility from various positions. * **Forward Voltage ($V_F$):** Generally ranges between **2.8V and 3.6V** for white LEDs. * **Forward Current ($I_F$):** Standard operating current is usually **20mA**. * **Operating Temperature:** Typically rated from **-40°C to +85°C**. ### 3. Key Features 1. **Compact Footprint:** Designed for high-density PCB layouts where space is limited. 2. **Energy Efficiency:** Low power consumption compared to traditional incandescent indicators. 3. **Reflow Soldering Compatible:** Built to withstand the high temperatures required for industrial automated assembly. 4. **RoHS Compliant:** The "-R" suffix often indicates compliance with environmental regulations regarding hazardous substances. ### 4. Typical Applications * **Consumer Electronics:** Status indicators on routers, laptops, or chargers. * **Industrial Equipment:** Control panel signal lights. * **Automotive:** Dashboard illumination and interior ambient lighting. * **Backlighting:** Small LCD screens or membrane switches. --- ### Example Circuit Integration When integrating this LED into a circuit, a current-limiting resistor is required. Use the following formula to calculate the resistor value: ```math R = \frac{V_{source} - V_F}{I_F} ``` *Example (for a 5V source):* ```text R = (5V - 3.2V) / 0.02A = 90 Ohms (Next standard value is 100 Ohms) ```