The **LMS-5W4-R** is a specific electronic component typically categorized as a **Linear LED Module** or a **Constant Current LED Driver module**, often used in commercial lighting or signage applications. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The LMS-5W4-R is designed for high-efficiency lighting. The alphanumeric code usually breaks down as follows: **LMS** (Linear Module System), **5W** (Power Rating), and **4** (often referring to the number of LED chips or a specific version). | Feature | Specification (Typical) | | :--- | :--- | | **Power Consumption** | 5 Watts | | **Input Voltage** | 12V DC or 24V DC (Model dependent) | | **Color** | Red (indicated by the "-R" suffix) | | **Light Output** | ~350 - 450 Lumens (varies by binning) | | **Operating Temp** | -20°C to +50°C | --- ### 2. Key Electronic Components The module consists of several critical parts integrated into a PCB (Printed Circuit Board): 1. **LED Emitters:** High-intensity Red LEDs. The wavelength for the "-R" model is typically in the **620nm - 630nm** range. 2. **Current Limiting Resistors/Drivers:** Used to ensure the LEDs do not experience thermal runaway. In higher-end LMS modules, a small constant-current IC is used instead of simple resistors to maintain brightness consistency across long chains. 3. **Aluminum Substrate (MCPCB):** The board is usually made of Metal Core PCB to dissipate heat generated by the 5W power draw, preventing the LEDs from burning out. 4. **Polarity Protection:** Often includes a diode to protect the circuit if the positive and negative wires are reversed during installation. --- ### 3. Connection and Installation The module is typically used in a daisy-chain configuration for signage or architectural "wall washing." ```cpp // Schematic Logic Representation [Power Supply (+)] ---- [R1] ---- [LED1] ---- [LED2] ---- [GND] [R2] ---- [LED3] ---- [LED4] ``` * **Wiring:** Standard 18-22 AWG wire is used for connection. * **Mounting:** Usually features pre-applied 3M thermal adhesive tape or screw holes for heat-sinking against a metal surface. --- ### 4. Application Use-Cases * **Channel Letters:** Illuminating red acrylic signs. * **Edge Lighting:** Providing a red glow for glass or acrylic panels. * **Automotive/Marine:** Used in custom 12V lighting rigs due to its moisture-resistant coating (often IP65 rated).