The **47LM-101BG-R** is a specific type of LED display component, typically categorized as a **Surface Mount Device (SMD) Seven-Segment LED Display**. These are widely used in consumer electronics, industrial panels, and appliances to show numeric data. --- ### 1. General Specifications Based on the standard nomenclature for this part series, here are the technical characteristics: | Feature | Specification | | :--- | :--- | | **Component Type** | 7-Segment LED Display | | **Number of Digits** | 1 Digit | | **Mounting Type** | Surface Mount (SMD / SMT) | | **Emitted Color** | Green / Bright Green | | **Polarity** | Common Anode or Common Cathode (Model specific) | | **Surface Color** | Black Face / Grey Face | | **Segment Color** | Milky White (when off) | --- ### 2. Key Internal Components The "Electronic Parts" within this single package consist of several semiconductor and structural elements: 1. **LED Die (Gallium Phosphide/GaP):** The actual light-emitting material. For a "Green" output (BG designation), it usually employs GaP or InGaN technology. 2. **Lead Frame:** The internal metal structure that carries the electrical current to each segment. 3. **Encapsulation Resin:** An epoxy or silicone material that protects the LED dies and diffuses the light evenly across the segment bar. 4. **Gold Wiring:** Microscopic wires that bond the LED chip to the external SMT pads. --- ### 3. Electrical Characteristics (Typical) To operate this part safely, you must adhere to the following electrical limits: | Parameter | Typical Value | | :--- | :--- | | **Forward Voltage ($V_f$)** | 1.8V to 2.2V per segment | | **Forward Current ($I_f$)** | 10mA to 20mA (Recommended) | | **Peak Current** | 60mA - 100mA (Pulse duty 1/10) | | **Reverse Voltage ($V_r$)** | 5V | | **Operating Temperature** | -40°C to +85°C | --- ### 4. Application and Usage Because this is an SMD part, it is designed for automated assembly (Pick and Place) and reflow soldering. * **Pinout Configuration:** Usually consists of 10 pins (depending on the specific footprint), representing the 7 segments (a-g), the decimal point (DP), and the common pin. * **Driving Circuit:** Requires a current-limiting resistor for each segment to prevent burnout. Usually driven by a 7-segment decoder IC like the **74HC595** or **MAX7219**. ---