# LED Bar Module, Common Cathode, 8 LEDs, 3-5V

> LED bar module with 8 LEDs, common cathode, power supply 3-5.5VDC, with integrated current-limiting resistors. Active level LOW, maximum current

- Page: https://sigmanortec.ro/en/led-bar-module-common-cathode-8-leds-3-5v
- Price: 12.35 RON
- Availability: In stock; 1-2 zile
- Reference: 88131 · EAN: 5943723517750
- Category: Mechatronics and IoT > Sensors and Modules > LED modules
- Specifications: Supply Voltage: 3; Maximum Input Voltage: 5; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.005 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

Ideal for visual display and quick testing of digital outputs on Arduino and similar boards, the 8-LED common cathode bar allows individual control of channels with LOW activation. It operates directly at 3-5V thanks to integrated resistors, has low power consumption and different color LEDs for easy signal identification in debugging, status indicators and DIY projects.
LED bar module with 8 common cathode LEDs with integrated resistors, compatible with Arduino and other development boards, designed for visual display and quick testing of digital outputs.
The module allows individual control for each LED through a logic signal, active low level operation, direct use at 3 and 5V without external resistors, low current consumption and easy identification of channels through LEDs in different colors.
Thanks to the integrated resistors, the module can be connected directly to the digital outputs of the development board, making it ideal for debugging, status indicators, microcontroller experiments and DIY bar graph projects.
Specifications:
Supply voltage: 3-5.5VDC
Number of LEDs: 8
LED type: common cathode
Current limiting resistors: integrated
Maximum current: < 24 mA
Active level: LOW
Dimensions: 23 x 15 mm
LED color:
LED channel | LED color
D0 | Yellow-green
D1 | Yellow-green
D2 | Blue
D3 | Blue
D4 | Yellow
D5 | Yellow
6 | Red
D7 | Red
Use:
Power the module with a voltage between 3 and 5VDC. Connect the LED pins to the digital outputs of the development board. Due to the common cathode configuration and integrated resistors, each LED lights up when the corresponding pin is brought to a logic LOW level, without the need to add external components.
Common Cathode Connection: