Based on the part number provided, this appears to be a specialized LED module or display component, likely manufactured by companies like **Luminus** or similar high-power LED vendors, often used in architectural or specialized projection lighting. --- ### 1. Component Overview The **LMS-4W6-R/Q** typically refers to a high-brightness LED light engine or module. These are designed for applications requiring high thermal stability and precise optical output. | Feature | Specification Details | | :--- | :--- | | **Category** | High-Power LED Module | | **Color Code (R)** | Red (typically ~625nm) | | **Quality/Bin (Q)** | Specific Flux or Voltage Binning | | **Configuration** | 4-Die / 4-Wire configuration (Common in high-intensity arrays) | --- ### 2. Key Electronic Characteristics #### A. Thermal Management These modules are built on a Metal Core Printed Circuit Board (**MCPCB**). Because they draw significant current, the electronic design focuses on: * **Thermal Resistance ($R_{th}$):** Extremely low to prevent junction burnout. * **Substrate:** Usually Copper or Aluminum for maximum heat dissipation. #### B. Electrical Driving The "4W" often signifies the wiring layout or power class. * **Forward Current ($I_f$):** Typically ranges from 700mA to 3000mA depending on the specific series. * **Forward Voltage ($V_f$):** Requires a constant current driver. Fluctuations in voltage can lead to thermal runaway. #### C. Optical Parameters * **Wavelength:** The "R" indicates a Red spectrum, essential for signaling, stage lighting, or horticulture. * **Viewing Angle:** Usually 120° (Lambertian distribution) unless integrated with a secondary TIR (Total Internal Reflection) lens. --- ### 3. Connection and Integration ```mermaid graph LR A[Constant Current Driver] --> B[Anode +] B --> C{LMS-4W6 Module} C --> D[Cathode -] C --> E[Heat Sink] ``` #### Application Circuit Notes: 1. **Driver Requirement:** Must use a **DC Constant Current** source. Do not use a constant voltage power supply. 2. **Dimming:** Compatible with PWM (Pulse Width Modulation) dimming for brightness control without shifting the color wavelength. 3. **Polarity:** Ensure correct orientation of the + and - terminals, as LEDs are polar sensitive and high reverse voltage can damage the internal dies. --- ### 4. Typical Applications * **Architectural Lighting:** Wall washing and facade illumination. * **Entertainment:** Moving head stage fixtures. * **Industrial:** Machine vision systems requiring high-intensity monochromatic light.