Kingbright SC40-19SRWA: Super Bright Red LED Numeric Display

The Kingbright SC40-19SRWA is a high-performance Super Bright Red LED numeric display, designed for applications requiring exceptional visibility and reliability. With its large 4.0-inch digit height and low current operation, this display offers a perfect balance between energy efficiency and brilliant illumination.

Features:

Superior Brightness: Utilizing Gallium Aluminum Arsenide (GaAlAs) Red Light Emitting Diodes for outstanding luminosity.
Robust Construction: Engineered to withstand electrostatic discharge and power surges, ensuring long-term durability.
Ease of Integration: Easy mounting on PC boards or sockets, with mechanically rugged design.
Compliance: Adheres to RoHS standards for environmental sustainability.
Versatile Applications: Suitable for home and smart appliances, display time and digital combinations, industrial, and instrumental applications.
Technical Specifications:

Optical Characteristics: With a peak emission wavelength of 655 nm and a dominant wavelength of 640 nm, the SC40-19SRWA delivers a broad spectral bandwidth for clear visibility.
Electrical Ratings: Operates with a forward voltage of 3.6V to 4.6V at 10mA, and a reverse current of -10 µA at 5V.
Environmental Resistance: Junction temperature up to 115°C, and designed to operate in temperatures ranging from -40°C to +85°C.
Design Considerations:

Electrostatic Discharge (ESD): It is recommended to use wrist bands or anti-electrostatic gloves when handling the LEDs.
Circuit Design: Protective current-limiting resistors may be necessary, and driving circuits should be designed to protect against reverse voltages and voltage spikes.
Mounting and Soldering:

Through Hole Display Mounting: Avoid bending component leads by hand and ensure proper installation without applying stress to lead terminals.
Wave Soldering Profile: Incompatible with reflow soldering; recommended soldering temperature is 260°C for 3-5 seconds.
Cleaning:

Flux and Cleaning: Use mild "no-clean" fluxes for soldering. If cleaning is required, components should be washed with water only, avoiding harsh organic solvents.
Packaging & Label Specifications:

Precautionary Notes: The document provides representative usage scenarios for technical reference. Specifications are subject to change without notice, and customers should refer to the latest datasheet for updated information.
Forward Current vs. Forward Voltage:

Graphs Provided: Illustrates the relationship between forward current, forward voltage, and luminous intensity, as well as the effect of ambient temperature on permissible forward current and luminous intensity.
Disclaimer:

Usage and Liability: Information applies to typical consumer electronics applications. For applications with special reliability requirements or life-threatening liabilities, consult with Kingbright for further assistance.
Technical Assistance:

Application Notes: For detailed design applications, refer to Kingbright's application notes available online.