The **HLMP-CB27-R0D00** is a high-brightness, blue LED manufactured by Broadcom (formerly Avago Technologies). It is part of the HLMP-Cx2x series, designed specifically for outdoor applications and electronic signs. ### Technical Specifications | Parameter | Specification | | :--- | :--- | | **LED Color** | Blue | | **Wavelength** | 470 nm (Dominant) | | **Luminous Intensity** | 520 mcd to 1500 mcd | | **Viewing Angle** | 23° (Typical) | | **Forward Voltage ($V_F$)** | 3.2V (Typical) to 4.0V (Max) | | **Forward Current ($I_F$)** | 30 mA | | **Lens Shape** | T-1 ¾ (5mm) Round | | **Lens Finish** | Clear, Non-diffused | --- ### Key Electronic Features #### 1. Material Technology The device utilizes **InGaN (Indium Gallium Nitride)** technology. This material is essential for high-efficiency blue light emission and allows for superior thermal stability compared to older LED technologies. #### 2. Radiation Pattern The HLMP-CB27 series features a **narrow viewing angle (23°)**. This concentrated beam is achieved through a precise optical grade epoxy lens, making it ideal for directional lighting where light needs to travel long distances. #### 3. Binning and Intensity The "R0D00" suffix refers to the specific binning for intensity and color. * **Intensity Binning:** Ensures uniform brightness when multiple LEDs are used in a single display panel. * **Color Binning:** Ensures wavelength consistency to prevent "patchy" color variations in large signs. --- ### Typical Circuit Application When integrating this LED into a circuit, a current-limiting resistor is required. **Example Calculation:** To run the LED at 20mA ($I_F = 0.02A$) from a 5V source: ```text R = (V_source - V_forward) / I_forward R = (5V - 3.2V) / 0.02A R = 90 Ohms (Use 100 Ohm standard resistor) ``` --- ### Common Applications * **Variable Message Signs (VMS):** Highway traffic signs and information boards. * **Commercial Outdoor Advertising:** Full-color billboards. * **Industrial Indicators:** Status lights that must be visible in direct sunlight.