1-Digit 7-Segment Common Cathode LED Display

The 1-Digit 7-Segment Common Cathode LED Display is a simple yet essential component for displaying numerical data in electronic projects. It consists of seven individual LED segments (labeled a–g) arranged in the shape of the number “8.” By selectively powering the segments, you can display numbers 0–9 and some alphabets.

This display uses the common cathode configuration, meaning that all LED segment cathodes are connected together to a single ground pin, while the anodes are controlled individually. This makes it easy to drive with microcontrollers (Arduino, PIC, ESP32, Raspberry Pi), ICs (like 4026, 4511, or 7447), or transistor driver circuits.

With its compact size and bright, clear illumination, this 7-segment display is widely used in digital counters, clocks, timers, calculators, voltmeters, frequency meters, and embedded systems. Its low power consumption and long lifespan make it a reliable choice for both hobbyists and professional electronics applications.

Specifications

• Type: 1-Digit 7-Segment LED Display
• Configuration: Common Cathode
• Digit Count: 1
• Segment Count: 7 (plus optional decimal point)
• Pin Count: 10 pins
• Color: Red (standard)
• Operating Voltage (per segment): ~1.8V – 2.2V (typical for red)
• Forward Current (per segment): 10mA – 20mA
• Digit Height: ~0.36″ to 0.56″ (varies with model)
• Package Size: Standard 5mm pitch DIP package
• Viewing Angle: Wide, clear visibility
• Mounting: Through-hole

Features

• Compact 1-digit 7-segment LED display
• Common cathode design for simple interfacing
• Bright, clear illumination with low power consumption
• Easy to control with microcontrollers, driver ICs, or logic circuits
• Durable and long-lasting with solid-state construction
• Ideal for digital counters, clocks, meters, and DIY electronics projects

Applications

• Digital clocks & timers
• Counter circuits
• Calculators
• Measurement instruments (voltmeters, frequency meters)
• Arduino, ESP32, Raspberry Pi projects
• DIY electronics and student engineering projects

Note: Images are for illustration purposes only. Actual product color, digit height, or pin arrangement may slightly vary based on the batch.