4-Digit 7-Segment Display Red Common Cathode 12-Pin (5641AS-1)
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Prices updated: 12 Oct 2026
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About this product
A 4-digit 7-segment LED display in red with a black face, wired as common cathode and fitted with 12 pins. It shows numeric readings in counters, timers, clocks and meters. The pins suit both PCB mounting and breadboard use, and the red AlGaAs-on-GaAs chips give high brightness at low current.
Specifications
- Digits
- 4
- Color
- Red / أحمر
- Configuration
- Common cathode / مهبط مشترك
- Pins
- 12
- Chip material
- AlGaAs on GaAs / AlGaAs على ركيزة GaAs
- Mounting
- PCB or breadboard / لوحة PCB أو لوحة تجارب
Frequently asked questions
How do I drive a common cathode display with a microcontroller?
Segment pins are driven through current-limiting resistors, and each digit's common cathode is switched to GND, usually with transistors when multiplexing. A driver IC such as the MAX7219 can simplify wiring.
Do I need resistors for each segment?
Yes. Always place a series resistor on each segment. Check the datasheet for the forward voltage and current of the chip before choosing the resistor value.
