1-Digit 7-Segment Common Cathode LED Display (RED)

Product OverviewThe 1-Digit 7-Segment Common Cathode LED Display is a compact, single-digit numeric display used in counters, clocks, timers, meters, and many DIY and embedded projects. It contains seven individual LED segments labeled a through g arranged to form the digit 8. By selectively powering segments, you can display numbers 0 to 9 and several alphabetic characters. The common cathode configuration ties all segment cathodes to a single ground pin, making it straightforward to drive from microcontrollers and typical driver ICs.Why choose this 1-digit 7-segment common cathode display?Simple common cathode wiring for direct microcontroller control or driver IC useBright, clear red illumination with low power consumption and long lifeStandard through-hole 10-pin DIP package for easy prototyping and PCB mountingCompatible with Arduino, ESP32, Raspberry Pi, PIC, and popular driver ICs like 4026 and 4511Key FeaturesCompact 1-digit 7-segment LED display in common cathode configuration7 segments plus optional decimal point (DP)Low power, solid-state construction for long lifespanWide viewing angle and bright red digits (standard color)Easy interfacing with microcontrollers, transistors, or dedicated driver ICsSpecificationsType: 1-digit 7-segment LED displayConfiguration: Common cathodeDigit count: 1Segment count: 7 (plus optional decimal point)Pin count: 10 pins (standard DIP)Color: Red (standard; other colors may be available by model)Operating voltage (per segment): ~1.8V to 2.2V (typical for red)Forward current (per segment): 10mA to 20mADigit height: ~0.36 to 0.56 inches (varies by model)Package size: Standard 5mm pitch DIP packageViewing angle: Wide, clear visibilityMounting: Through-holePinout and Wiring TipsIn a common cathode 7-segment display, all cathode pins are connected to ground. Each anode controls one segment and should be driven through a current-limiting resistor from your microcontroller or driver. Typical wiring steps:Connect the common cathode pin(s) to GND.Connect each segment anode (a, b, c, d, e, f, g, DP) to a microcontroller pin or driver output through a resistor.Choose resistor values to set segment current: R = (Vcc – Vf) / I. Example: for 5V supply, Vf~1.9V, I = 10mA, R ≈ (5 – 1.9) / 0.01 = 310 ohms. Use 330 ohms for safe operation.Driving OptionsDirect drive from microcontroller GPIO pins (use resistors and ensure current limits are respected)Use driver ICs such as 4026, 4511, or 7447 for simplified counting and multiplexingUse NPN transistor or MOSFET arrays for higher current or multiplexed multi-digit displaysFor low-pin-count control, consider shift registers or LED driver ICs with current limitingApplicationsDigital clocks and timersCounter circuits and scoreboardsCalculators and measurement displays (voltmeters, frequency meters)Arduino, ESP32, Raspberry Pi, and PIC learning projectsEmbedded systems, DIY electronics, and student engineering projectsMounting and PackagingThis 1-digit 7-segment common cathode display is supplied in a standard through-hole 10-pin DIP package for simple PCB insertion or breadboard prototyping. Check digit height and pin arrangement for your model when planning mounting or enclosures.Ordering NotesImages and sample units are for illustration purposes only. Actual product color, digit height, brightness, or pin arrangement may vary slightly between batches or manufacturers. Contact your supplier for specific model variants or color options. Category: Display Modules and LCDs Tags: 1-digit 7-segment display, 7-segment LED module, Arduino 7-segment display, common cathode 7-segment, digital counter display, electronic display component, LED numeric display, single digit LED display College Road Electronics4.85 (317 Reviews)