The **FSTL20** (often referring to the **FSTL20 LED Strip Series** or specific high-density COB/SMD modules) is a high-performance linear lighting solution. Below is a breakdown of the electronic components, specifications, and architecture typically found in these units. --- ## 1. Core Electronic Components The FSTL20 architecture relies on three primary electronic layers: | Component | Description | Function | | :--- | :--- | :--- | | **LED Diodes** | High-efficiency SMD (Surface Mount Device) or COB (Chip on Board) chips. | Converts electrical energy into light. | | **FPCB** | Flexible Printed Circuit Board (usually double-sided copper). | Provides the electrical pathway and heat dissipation. | | **Resistors** | Surface-mount current-limiting resistors. | Stabilizes the current to prevent LED burnout from voltage spikes. | | **Copper Traces** | 2oz or 3oz rolled copper layers. | Minimizes voltage drop over long distances. | --- ## 2. Technical Specifications Most FSTL20 modules operate under the following electronic parameters: ### Electrical Input * **Voltage:** Usually **24V DC** (to allow for longer runs with less voltage drop compared to 12V). * **Power Consumption:** Approximately **20 Watts per meter** (hence the "20" designation). * **Current:** ~0.83 Amps per meter. ### Circuit Design * **Cuttable Units:** The PCB is designed with designated cutting points, usually every 50mm or 100mm, featuring exposed copper pads for soldering or clip connectors. * **Dimmability:** Compatible with PWM (Pulse Width Modulation) dimmers and DALI/0-10V drivers. --- ## 3. Thermal and Material Properties Electronic longevity is dictated by how the FSTL20 handles heat: * **Thermal Management:** The FPCB acts as a primary heat sink. For the 20W/m specification, it is electronically required to be mounted on an aluminum profile to prevent "thermal runaway," which degrades the LED phosphors. * **Adhesive Backing:** Uses thermally conductive 3M tape (e.g., 3M 300LSE) to transfer heat from the PCB to the mounting surface. --- ## 4. Connection Diagram To power the FSTL20, the electronic setup follows this flow: ```mermaid graph LR A[AC 110/220V] --> B[DC 24V Power Supply] B --> C{Dimmer/Controller} C --> D[FSTL20 LED Strip] ``` ### Wiring Precautions * **Voltage Drop:** Do not exceed 5-7 meters in a single continuous series run; otherwise, the electronic resistance of the copper traces will cause the end of the strip to dim. * **Polarity:** Must observe strictly (V+ and V-) as LEDs are diodes and only allow current to flow in one direction. ---