A 4 Digit 7 Segment Display, also known as a Four Digit Seven Segment Display or Four Digit Numeric LED Display, combines four numeric digits within one integrated package. It can display values from 0000 to 9999 and supports decimal-based readings, counters, timer values, measurements and equipment settings.
Each digit consists of seven LED segments arranged to form numbers from 0 to 9. By controlling the appropriate segment combinations, the display provides a direct and easily recognisable numeric readout.
Combining four digits in one package helps maintain consistent digit alignment and spacing across the display. It is a practical choice for electronic products requiring a compact four-digit indication without assembling and aligning four separate display components.
Alfa Electronic Components offers 18 Four Digit Seven Segment Display variants covering digit sizes from 0.24 inch to 1 inch. Different body dimensions are available within selected digit sizes, allowing buyers to identify a suitable display according to PCB space, enclosure dimensions, panel opening and readability requirements.
Compact Display Sizes
Compact 0.24-inch, 0.25-inch, 0.28-inch, 0.31-inch, 0.36-inch, 0.39-inch and 0.4-inch variants are suitable for space-constrained equipment, embedded modules, portable instruments and compact electronic control systems.
These models provide a complete four-digit readout while keeping the overall PCB and enclosure dimensions manageable.
0.56-Inch Displays
The 0.56-inch Four Digit Seven Segment Display is a widely used size for digital meters, counters, temperature controllers, weighing instruments, power electronics and industrial control panels.
Multiple body formats are available in this size, including a compact 37 × 19 × 8 mm model for applications where reduced display width is important.
0.8-Inch and 1-Inch Displays
The 0.8-inch and 1-inch variants provide larger numeric characters for applications requiring improved visibility. They are suitable for industrial equipment panels, process-control systems, machine interfaces and larger measuring instruments.
Different package dimensions are available within these digit sizes, enabling selection according to available PCB area and equipment design.
Multiplex Drive Operation
All listed variants use multiplex drive operation. In this method, the four digits share segment connections and are activated sequentially at a suitable refresh rate.
Multiplex driving helps reduce the number of control connections required for a multi-digit display. Correct operation requires an appropriate microcontroller or driver circuit, current-limiting components and properly configured digit-selection timing.
Common Anode and Common Cathode Options
The range is available in Common Anode and Common Cathode configurations. The required configuration depends on the display driver and circuit design.
Because these polarities use different current-driving arrangements, buyers should confirm the required option before ordering or completing the PCB design.
Decimal Points and Separator Formats
Most listed models provide four decimal points, supporting flexible placement of decimal values. The 0.25-inch model provides three decimal points and includes a centre separator within its display format.
This configuration may be useful in timer-style readouts and other applications requiring grouped numerical information. The exact display-face arrangement and pin functions should be verified for the selected model.
Unified Product Selection
The complete range of 18 variants is presented under this product listing for convenient technical evaluation. Buyers can use the variant grid to compare digit height, body dimensions, decimal-point format, model number, polarity and datasheet availability.
