## Overview of the L2CA-50-R The **L2CA-50-R** is a specific model within the **Luxeon C** series of Color LEDs, manufactured by **Lumileds**. It is a high-power, color-stable LED designed for architectural, emergency vehicle, and entertainment lighting applications. --- ### 1. Key Technical Specifications The "50" in the part number typically refers to the dominant wavelength or color category (in this case, **Royal Blue**). | Parameter | Specification | | :--- | :--- | | **Color** | Royal Blue | | **Dominant Wavelength** | 440 nm – 455 nm | | **Radiometric Power (Typical)** | 550 mW – 650 mW (at 350mA) | | **Forward Voltage ($V_f$)** | 2.5V to 3.0V (Typical) | | **Maximum Drive Current** | 1050 mA | | **Viewing Angle** | 150° (Lambertian radiation pattern) | | **Operating Temperature** | -40°C to 135°C | --- ### 2. Physical and Material Characteristics The L2CA-50-R is built to handle high thermal loads in a compact footprint. * **Package Dimensions:** 2.0mm x 2.0mm. * **Thermal Pad:** It features an electrically isolated thermal pad. This allows for better heat dissipation because the heat sink does not need to be electrically neutral from the rest of the circuit. * **Lens Material:** Clear Silicone. * **ESD Protection:** Integrated Transient Voltage Suppressor (TVS) to protect the diode from Electrostatic Discharge (ESD) up to 8kV. --- ### 3. Electrical Interconnect (PCB Layout) To integrate the L2CA-50-R, the PCB must be designed to manage the high current and heat. ```c // Example Pad Configuration (Generic SMD LED) [ Anode (+)] ---- [ Thermal Pad ] ---- [ Cathode (-) ] (1) (Center) (2) ``` **Soldering Notes:** * Requires **Reflow Soldering** (JEDEC J-STD-020D compliant). * Recommended solder paste: Lead-free (SAC305). --- ### 4. Application Use Cases Due to its high intensity and specific wavelength, this part is used in: 1. **Horticulture:** Providing the blue spectrum necessary for vegetative growth. 2. **Entertainment:** High-density color mixing in stage lights. 3. **Specialty Lighting:** Curing applications or emergency strobe lights. ---