## Overview of HLMP-EL30-R6000 The **HLMP-EL30-R6000** is a high-intensity, precision optical performance LED manufactured by Broadcom (formerly Avago Technologies). It belongs to the **T-1¾ (5mm)** lamp family and is specifically designed for high-visibility applications due to its amber color and narrow viewing angle. --- ### Technical Specifications | Parameter | Specification | | :--- | :--- | | **Color** | Amber (590 nm) | | **Luminous Intensity** | 4600 mcd to 9300 mcd (at 20mA) | | **Viewing Angle** | 30° | | **Forward Voltage ($V_F$)** | 1.9V to 2.4V | | **Forward Current ($I_F$)** | 20mA (Typical) | | **Operating Temperature** | -40°C to +100°C | | **Material** | AlInGaP (Aluminum Indium Gallium Phosphide) | | **Package Size** | 5mm (T-1¾) | --- ### Key Features and Characteristics 1. **High Intensity Output**: Utilizing AlInGaP technology, it provides high light output over a long life span, making it suitable for outdoor sunlight-readable applications. 2. **Precision Optics**: The 30-degree viewing angle ensures a well-defined spatial radiation pattern, focusing the light into a concentrated beam. 3. **Moisture Resistance**: The package is designed to withstand humidity, though standard precautions for through-hole components apply. 4. **Color Stability**: The Amber wavelength is highly stable across varying temperatures, ensuring consistent signaling. --- ### Common Applications * **Traffic Management**: Used in variable message signs, traffic signals, and pedestrian crossings. * **Commercial Outdoor Advertising**: LED billboards and large-scale displays. * **Automotive**: Auxiliary lighting and interior indicators. * **Industrial**: Status indicators that require high visibility from a distance. --- ### Basic Implementation Circuit To drive the LED safely with a standard DC power source (e.g., 5V), a current-limiting resistor is required. ```cpp // Basic Calculation for Resistor (R) // R = (V_source - V_forward) / I_forward // R = (5V - 2.0V) / 0.02A = 150 Ohms ``` ---