### HLMP-EH26-R2000: Technical Overview The **HLMP-EH26-R2000** is a high-brightness, precision optical performance AlInGaP (Aluminum Indium Gallium Phosphide) LED manufactured by Broadcom (formerly Avago Technologies). It is specifically designed for applications requiring high light output and reliable performance in outdoor or high-ambient light conditions. --- ### Core Specifications Below are the primary electrical and optical characteristics of the HLMP-EH26-R2000: | Parameter | Specification | | :--- | :--- | | **LED Type** | Standard 5mm (T-1 ¾) Circular | | **Color** | Red-Orange | | **Dominant Wavelength** | 615 nm (Typical) | | **Luminous Intensity** | 930 mcd to 2500 mcd (@ 20mA) | | **Viewing Angle** | 23° (Narrow Beam) | | **Forward Voltage ($V_f$)** | 1.9V (Min) to 2.4V (Max) | | **Forward Current ($I_f$)** | 20mA (Standard Operating) | | **Lens Appearance** | Clear, Non-diffused | --- ### Key Electronic Components & Technology #### 1. AlInGaP Die Technology The "heart" of this LED is the **Aluminum Indium Gallium Phosphide** semiconductor material. Unlike older GaAsP LEDs, AlInGaP provides extremely high luminous efficiency, meaning it converts more electrical energy into visible light rather than heat. #### 2. Optical Package Design The **R2000** suffix indicates a specific packaging configuration (often referring to bulk or specific lead lengths). * **Narrow Beam:** The 23-degree viewing angle is achieved through a precision-molded epoxy lens. This concentrates the photons into a tight cone, increasing the "on-axis" intensity. * **Standoffs:** These LEDs typically come with lead frame standoffs to ensure consistent seating height on a PCB during soldering. #### 3. Environmental Durability The electronic packaging is designed to resist moisture and high temperatures, making it suitable for: * Traffic signals and signs. * Commercial outdoor advertising. * Automotive interior/exterior lighting. --- ### Basic Implementation Circuit To operate this LED safely, a current-limiting resistor is required. Assuming a 5V DC power source: ```python # Calculation for Resistor (R) # V_source = 5V # V_forward = 2.0V (Typical) # I_forward = 0.02A (20mA) # Formula: R = (V_source - V_forward) / I_forward # R = (5 - 2.0) / 0.02 = 150 Ohms ``` --- ### Usage Considerations * **Heat Dissipation:** While efficient, running the LED at its maximum rated current (30mA - 50mA peak) for long periods requires adequate airflow to prevent wavelength shift or degradation. * **ESD Sensitivity:** Like most AlInGaP devices, it is sensitive to Static Electricity. Proper ESD grounding should be used during assembly.