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0.56" Red 3-Digit 7-Segment LED Display (Common Cathode)

0.56" Red 3-Digit 7-Segment LED Display (Common Cathode)

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SpecificationDetails
Digit Height0.56 Inch (14.22 mm)
Digit Count3 Digits
ConfigurationCommon Cathode (CC)
Emitting ColorHigh-Intensity Red
Forward Voltage1.8V to 2.2V per segment
Forward Current15mA to 20mA per segment
Package Type12-Pin DIP
Price
₹ 42.37 ₹ 42.37
(Tax included)

Product Description

The 0.56" 3-Digit Display is designed for multiplexed operation, sharing 8 segment pins (A-G and Decimal Point) across all three digits. This reduces the connection requirement to just 11 or 12 active pins, making it much easier to interface with microcontrollers like Arduino. The segments are housed in a robust package with a black face and white segments to maximize contrast when the red LEDs are illuminated.

Key Features

  • High Visibility: The 0.56-inch digit height and bright red LEDs ensure the data is legible even in well-lit environments.

  • Space-Efficient: The 3-digit format is perfect for displaying values from 0 to 999 without the bulk of a 4-digit module.

  • Multiplex-Ready: Designed for high-speed scanning, allowing for a flicker-free display using only a few GPIO pins.

  • Industrial Standard: Fits into standard 2.54mm pitch breadboards and universal PCBs for rapid prototyping.

  • Low Power: Efficient LED technology allows for bright readouts with minimal current draw, ideal for portable projects.

Technical Details

  • Dimensions: Approximately 37.6mm x 19mm.

  • Wavelength: 625nm - 635nm (Standard Red).

  • Operating Temp: -25°C to +85°C.

Prototyping and Engineering Tips from Robogears

  • Resistor Requirement: Never connect this display directly to a power source. You must use current-limiting resistors (typically 220Ω to 470Ω) on each of the 8 segment lines to protect the LEDs from burning out.

  • Common Cathode Logic: To turn on a segment, connect the Common Pin to Ground and pull the desired Segment Pin (A-G) High (3.3V or 5V).

  • Multiplexing Speed: To display different numbers on each digit simultaneously, your code must cycle through the digits very quickly (at least 60Hz). This uses "persistence of vision" to make all digits appear "on" at the same time.

  • Driving High Loads: If you are using a 5V system, an Arduino can typically drive these segments directly. However, for maximum brightness across all digits, using a driver IC like the MAX7219 is recommended to handle the current more effectively.

Package Includes

  • 1 x 0.56" Red 3-Digit 7-Segment LED Display (Common Cathode)

Disclaimer

Excessive heat while soldering can damage the internal LED bonds. Limit soldering time to 3 seconds per pin. Ensure you have confirmed your circuit is Common Cathode before wiring.