## HLMP-CE12-R0CDD: Electronic Components Overview The **HLMP-CE12-R0CDD** is a high-brightness Cyan LED manufactured by **Broadcom (formerly Avago Technologies)**. It belongs to the HLMP-Cx11/12/21/22 series, which is specifically designed for high-performance applications such as traffic signals and commercial outdoor advertising. ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Color** | Cyan (Bluish-Green) | | **Dominant Wavelength** | Typ. 505 nm | | **Luminous Intensity** | 1,500 mcd - 2,500 mcd (R0 Bin) | | **Forward Voltage ($V_f$)** | 2.8V - 3.8V | | **Viewing Angle** | 15° (Narrow Beam) | | **Lens Shape** | T-1 ¾ (5mm) Circular | | **Lens Appearance** | Clear, Non-diffused | | **Mounting Type** | Through-Hole | --- ### 2. Core Features * **InGaN Technology:** The chip uses Indium Gallium Nitride (InGaN) materials, which provide high efficiency and high light output compared to older technology. * **Precision Optical Performance:** The 15-degree narrow viewing angle ensures a concentrated beam of light, making it ideal for signage where long-distance visibility is required. * **Environmental Robustness:** The epoxy resin contains UV inhibitors to reduce the effects of long-term exposure to direct sunlight. * **Standoffs:** The "12" in the part number indicates that the LED has **leads with standoffs**, which help in maintaining a consistent height during PCB assembly and allow for easier cleaning after soldering. --- ### 3. Pinout and Internal Structure The device follows the standard 5mm LED configuration: ```text (Longer Lead) ----|>|---- (Shorter Lead) Anode (+) Cathode (-) ``` * **Anode:** Connected to the positive terminal of the power supply. * **Cathode:** Connected to the ground or the current-limiting resistor. Identified by the shorter lead and a flat spot on the LED's plastic base. --- ### 4. Application Areas 1. **Traffic Management:** Used in pedestrian crossing signals and green traffic lights. 2. **Commercial Signage:** High-intensity backlighting for outdoor advertising. 3. **Industrial Indicators:** Status lights for machinery that require high visibility in bright environments. ---