### HLMP-CB11-R0ADD Overview The **HLMP-CB11-R0ADD** is a high-intensity, precision-optical performance Blue LED manufactured by Broadcom (formerly Avago Technologies). It is part of the HLMP-Cx11 series, specifically designed for applications requiring high light output and a well-defined radiation pattern. --- ### 1. Technical Specifications The following table highlights the primary electrical and optical characteristics of the device: | Parameter | Specification | | :--- | :--- | | **Color** | Blue | | **Dominant Wavelength** | 470 nm (typical) | | **Luminous Intensity** | 930 - 2500 mcd @ 20mA | | **Viewing Angle** | 15° | | **Forward Voltage ($V_F$)** | 3.2V (typical) / 3.8V (max) | | **Forward Current ($I_F$)** | 30 mA (max) | | **Package Type** | T-1 ¾ (5mm) Round Through-Hole | | **Lens Effect** | Clear, Non-diffused | --- ### 2. Key Electronic Components & Materials The performance of the HLMP-CB11-R0ADD is driven by specific material science and structural engineering: * **InGaN Technology:** The LED chip utilizes **Indium Gallium Nitride (InGaN)** on a Sapphire substrate. This technology is essential for producing high-efficiency blue light. * **Precision Optical Lens:** The 5mm package features a clear, non-diffused epoxy that focuses the light into a narrow **15-degree beam**, making it ideal for long-distance visibility. * **Lead Frame:** The device uses a silver-plated lead frame to ensure optimal electrical conductivity and heat dissipation from the junction to the PCB. * **ESD Protection:** InGaN LEDs are sensitive to static; this part typically requires standard ESD precautions during assembly (Class 1C or higher). --- ### 3. Application Use-Cases Due to its narrow viewing angle and high intensity, this part is commonly used in: 1. **Variable Message Signs:** Traffic management and informational displays. 2. **Commercial Outdoor Advertising:** Large-scale LED video screens. 3. **Solar Powered Signs:** High efficiency allows for lower power consumption while maintaining visibility. 4. **Industrial Equipment:** Status indicators that need to be visible in high-ambient light environments. --- ### 4. Circuit Implementation Example When integrating this LED into a circuit, a current-limiting resistor is required. ```cpp // Calculation for a 5V System: // R = (V_source - V_forward) / I_forward // R = (5V - 3.2V) / 0.020A // R = 90 Ohms (Standard value: 100 Ohms) ```