## Electronic Specifications: HLMP-CB12-R0ADD The **HLMP-CB12-R0ADD** is a high-brightness Blue LED manufactured by Broadcom (formerly Avago Technologies). It is part of the T-1 ¾ (5mm) through-hole package series, specifically designed for high-performance applications like outdoor signage and signals. --- ### 1. Key Technical Specifications Below are the primary electronic and optical characteristics of the component: | Parameter | Specification | Note | | :--- | :--- | :--- | | **Color** | Blue | 470 nm (Dominant Wavelength) | | **Luminous Intensity** | 1500 - 1900 mcd | Minimum value at 20mA | | **Forward Current ($I_f$)** | 30 mA | Maximum rating | | **Forward Voltage ($V_f$)** | 3.2V - 3.8V | Typical at 20mA | | **Viewing Angle** | 15° | Highly directional beam | | **Lens Type** | Clear / Non-Diffused | Circular pattern | | **Operating Temp** | -40°C to +85°C | Industrial grade | --- ### 2. Functional Description * **Material Technology:** This LED utilizes InGaN (Indium Gallium Nitride) technology on a sapphire substrate, which provides superior efficiency and brightness compared to older silicon carbide technologies. * **Radiation Pattern:** With a 15-degree viewing angle, this part is considered a "narrow beam" LED. It is designed to project light over long distances, making it ideal for message boards and traffic signals. * **ESD Sensitivity:** Like most Blue LEDs, this part is sensitive to static electricity. It typically has a Class 1C ESD rating (HBM), requiring anti-static precautions during handling and soldering. --- ### 3. Application Circuit Considerations To ensure the longevity of the HLMP-CB12-R0ADD, a current-limiting resistor must be used. #### Calculation Example: If using a **5V supply** and aiming for a standard **20mA** operating current: ```text R = (V_supply - V_forward) / I_forward R = (5V - 3.2V) / 0.020A R = 90 Ohms (Standard value: 91 or 100 Ohms) ``` --- ### 4. Part Number Breakdown * **HLMP**: Broadcom LED product prefix. * **C**: Blue Color (InGaN). * **B**: 5mm (T-1 ¾) package. * **12**: 15° Viewing Angle. * **R0A**: Intensity binning code. * **DD**: Packaging/Leads configuration (usually Ammo Pack).