The **FLM-B2-R** is an electronic component primarily categorized as a **Bi-color Surface Mount Device (SMD) LED**. These components are frequently used in industrial control panels, networking equipment, and consumer electronics to provide status visual indicators. --- ### 1. Technical Specifications Below is a breakdown of the typical electronic characteristics for a dual-color LED in this family (Red/Green): | Parameter | Red Specifications | Green Specifications | | :--- | :--- | :--- | | **Peak Wavelength** | ~630 nm | ~570 nm | | **Forward Voltage ($V_f$)** | 1.8V - 2.4V | 2.0V - 2.6V | | **Luminous Intensity** | ~50 - 100 mcd | ~30 - 60 mcd | | **Viewing Angle** | 120° | 120° | | **Max Forward Current** | 20mA - 30mA | 20mA - 30mA | --- ### 2. Key Electronic Features The FLM-B2-R series is engineered for specific circuit integration requirements: * **Common Cathode/Anode Configuration:** These parts usually feature a shared terminal to save space on the Printed Circuit Board (PCB). * **Surface Mount Technology (SMT):** Designed for automated pick-and-place assembly, reducing manufacturing costs compared to through-hole LEDs. * **Thermal Management:** Built with materials capable of withstanding standard reflow soldering temperatures (up to 260°C). * **Moisture Sensitivity:** Typically rated at MSL 3, requiring controlled storage to prevent "popcorning" during soldering. --- ### 3. Circuit Application In an electronic schematic, the FLM-B2-R requires current-limiting resistors for both color channels to prevent thermal runaway. #### Example Connection Logic: ```cpp // Logic for driving a Bi-color LED (Microcontroller) if (status == "NORMAL") { digitalWrite(GREEN_PIN, HIGH); // Current flows through Green LED digitalWrite(RED_PIN, LOW); } else if (status == "ERROR") { digitalWrite(RED_PIN, HIGH); // Current flows through Red LED digitalWrite(GREEN_PIN, LOW); } ``` --- ### 4. Typical Use Cases * **Network Indicators:** Showing Link (Green) vs. Activity/Error (Red). * **Power States:** Indicating On (Green) vs. Charging/Standby (Red). * **Diagnostic Tools:** Handheld devices requiring compact multi-state feedback.