The **TLS-R5-200UYC** is a specific type of Light Emitting Diode (LED). Based on the industry nomenclature, it is a **5mm (T-1 ¾) Round Super Bright Yellow/Ultra Yellow LED**. These components are widely used in status indicators, displays, and signage. --- ### 1. Technical Specifications The following table outlines the typical electrical and optical characteristics for this component: | Parameter | Specification (Typical) | | :--- | :--- | | **Color** | Ultra Yellow / Amber | | **Wavelength** | ~590 nm | | **Luminous Intensity** | 1000 - 2500 mcd (varies by bin) | | **Forward Voltage ($V_f$)** | 1.8V - 2.4V | | **Forward Current ($I_f$)** | 20mA (Standard) | | **Viewing Angle** | 20° - 30° (Narrow beam) | | **Lens Type** | Water Clear | | **Package Size** | 5mm (T-1 ¾) | --- ### 2. Physical Construction and Pins The LED consists of several internal parts that allow it to function: 1. **Anode (+):** The longer lead. This is where current enters the device. 2. **Cathode (-):** The shorter lead, usually marked by a flat edge on the plastic LED housing. 3. **Epoxy Resin Lens:** Protects the internal semiconductor and focuses the light beam. 4. **Semiconductor Die:** Typically made of **AlGaInP** (Aluminum Gallium Indium Phosphide) to produce the yellow spectrum. 5. **Reflector Cup:** Directs light upward to increase brightness. --- ### 3. Basic Circuit Integration To use this LED safely, a current-limiting resistor is required. You can calculate the resistor value ($R$) using Ohm’s Law: ```text R = (Source Voltage - Forward Voltage) / Forward Current ``` **Example Calculation:** If using a 5V power supply: `R = (5V - 2.0V) / 0.02A = 150 Ohms` --- ### 4. Key Applications * **Outdoor Displays:** High brightness makes it visible in sunlight. * **Automotive:** Dashboard indicators and signal lights. * **Industrial:** Status indicators on control panels. * **Consumer Electronics:** Power indicators for appliances.