The **KC-3SLN-R** is an electronic component manufactured by **Kingbright**. It is a high-performance, single-digit 7-segment LED display. This specific part is commonly used in digital clocks, instrument panels, and consumer electronics where numerical data visualization is required. --- ### 1. Key Technical Specifications The following table highlights the primary electrical and physical characteristics of the KC-3SLN-R: | Parameter | Specification | | :--- | :--- | | **Display Type** | 7-Segment (Single Digit) | | **Emitting Color** | Super Bright Red | | **Material** | AlGaInP (Aluminum Gallium Indium Phosphide) | | **Lens Appearance** | White Segment, Grey Face | | **Circuit Configuration** | Common Cathode | | **Forward Voltage ($V_F$)** | 1.85V (Typical) / 2.5V (Max) | | **Luminous Intensity** | 14,000 - 34,000 μcd | | **Peak Wavelength** | 660 nm | --- ### 2. Functional Components The device consists of the following electronic sub-parts: 1. **LED Dies (Light Emitting Diodes):** There are 8 individual LEDs inside the package (7 for the segments 'a' through 'g', and 1 for the decimal point 'DP'). 2. **Epoxy Resin/Reflector:** The white segments are filled with a diffusing resin to ensure uniform light distribution across the bar. 3. **Lead Frame:** A copper alloy frame that provides electrical connectivity to each internal LED. 4. **Common Cathode Pinout:** In this configuration, all the negative terminals (cathodes) of the LEDs are tied together to a single ground pin, while each segment is controlled by applying a positive voltage (Anode). --- ### 3. Application Circuit Considerations To integrate the KC-3SLN-R into a circuit, developers must consider: * **Current Limiting:** Since LEDs are current-driven devices, a resistor must be placed in series with each anode segment. * *Formula:* $R = (V_{supply} - V_F) / I_{forward}$ * **Multiplexing:** If using multiple units, a microcontroller often cycles through the digits rapidly to save I/O pins. * **Operating Temperature:** The part is rated for operation between -40°C and +85°C, making it suitable for industrial environments. ---