The part number **L1CU-RNG1000000000** refers to a high-power LED from the **LUXEON C Color Line**, manufactured by **Lumileds**. Specifically, this is a **Red-Orange** light-emitting diode designed for architectural, emergency vehicle, and horticulture lighting. --- ### Technical Specifications The following table summarizes the primary electronic and optical characteristics of the L1CU-RNG1000000000: | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Lumileds | | **Color** | Red-Orange | | **Dominant Wavelength** | 611 nm to 621 nm | | **Luminous Flux (Typical)** | 55 Lumens @ 350mA | | **Forward Voltage (Typical)** | 2.2 V | | **Maximum Drive Current** | 1050 mA | | **Viewing Angle** | 150° (Lambertian) | | **Package Size** | 2.0mm x 2.0mm | | **Operating Temperature** | -40°C to 135°C | --- ### Key Features and Design #### 1. Color Consistency The LUXEON C Color Line is famous for its **Hot Color Targeting**. This means the LED is tested and binned at an actual operating temperature of **85°C**, ensuring that the color remains consistent when the LED is warmed up in a real-world application, rather than just at room temperature. #### 2. Optical Center All colors in the LUXEON C family share a **single focal point**. This is a significant advantage for engineers because: * It simplifies the design of secondary optics (lenses/reflectors). * It ensures consistent light patterns even when mixing different colors (e.g., Red, Green, and Blue) in the same fixture. #### 3. Low Thermal Resistance The package is designed with a very low thermal resistance, allowing it to handle high currents (up to 1.05A) while effectively dissipating heat through the PCB. --- ### Application Examples * **Horticulture:** Provides specific wavelengths needed for plant growth stages. * **Emergency Vehicles:** Used in light bars for police or ambulances due to high intensity. * **Architecture:** Used in "wall washing" or decorative color-changing lighting. --- ### Sample Footprint/Connection The device is a Surface Mount Device (SMD). While it only has two functional electrical terminals (Anode and Cathode), it includes a large thermal pad for heat management. ```text [Top View] _________________ | _ | | / \ | <-- Silicone Lens | \ _ / | |_________________| 2.0mm x 2.0mm ```