dot matrix LED display 3mm 5×7 bi-color

Series No:





22.75 x 31.8 x 8.5

Dot height:(mm)

1.1 inch

Dot pitch:(mm)


Dot size:(mm)







The dot matrix LED display 3mm 5×7 bi-color is an essential component in the realm of electronic displays, combining compact design with effective multi-color illumination. This display technology, especially vital for applications requiring precise and versatile LED indication, has transformed the functionality of numerous devices across various industries. This article provides an in-depth look at the features, applications, and advantages of this specific LED display, enhanced by relevant case studies and user testimonials.

Features of the 3mm 5×7 Bi-Color Dot Matrix LED Display

The 3mm 5×7 bi-color dot matrix LED display stands out for its:

  • Bi-Color LEDs: Each LED can emit two colors (typically red and another color), which allows for dynamic content presentation without increasing the size of the display.
  • High Density: The 3mm pin spacing ensures that the display remains compact while offering sufficient resolution for readable text and intricate symbols.
  • Energy Efficiency: Utilizes LED technology known for lower power consumption, which is crucial for portable and battery-operated devices.

Applications Across Diverse Fields

The versatility of the dot matrix LED display makes it suitable for various applications:

  • Consumer Electronics: Utilized in devices like digital watches, audio equipment, and handheld gaming devices, where users benefit from clear, multi-color indications.
  • Automotive: Dashboard warning lights, entertainment system displays, and control messages often employ bi-color matrices for better driver comprehension.
  • Industrial Equipment: In machinery and control systems, these displays provide critical status updates, warnings, and operational messages in different colors to ensure safety and efficiency.

Benefits of Using the 3mm 5×7 Bi-Color Dot Matrix LED Display

  • Enhanced Visual Communication: The bi-color feature allows for complex messages and alerts to be conveyed more effectively, improving user interaction and safety.
  • Compactness: Fits into small spaces in electronic devices without compromising the display quality, making it ideal for increasingly miniaturized electronic products.
  • Cost-Effectiveness: Provides a high-value solution given its durability and low operational costs, reducing the overall expense of electronic device production.

Case Studies: Demonstrating Value and Innovation

Illustrative case studies from industries such as healthcare, automotive, and consumer electronics show how the 3mm 5×7 bi-color dot matrix LED displays have been effectively integrated into products, enhancing functionality and user experience.

User Testimonials

Testimonials from electronics engineers and designers highlight the reliability and versatility of these LED displays, underlining their significant impact on product development and market success.


The 3mm 5×7 bi-color dot matrix LED display is more than just an LED indication tool; it is a critical element for modern electronic applications that require reliable, high-quality displays. Its ability to deliver precise and multi-color visual information in a compact format makes it indispensable in the development of sophisticated electronic products.

Call to Action Transform your electronic designs with the versatile and efficient 3mm 5×7 bi-color dot matrix LED display. Contact us today to learn more about integrating this technology into your next project.

dot matrix LED display 3mm 5x7 bi-color
dot matrix LED display 3mm 5×7 bi-color


  • Matrix Size: This matrix has a height of 30.42mm and a display width and height of 22.75×31.8mm, making it compact and suitable for a range of display needs.
  • Dot Characteristics: It features circular dots, each 3mm in size, providing clear and distinct illumination.
  • Grid Configuration: With 5 columns and 7 rows, the matrix supports a variety of simple yet effective display patterns.
  • Bi-Color Display: The bi-color capability adds versatility to the display, allowing for more dynamic and colorful presentations.
  • Energy Efficient: Designed for low current operation, it is ideal for energy-saving applications and prolonged use.
  • High Visibility: High contrast and light output ensure that the display is easily readable in different lighting conditions.
  • Code Compatibility: Compatible with ASCII and EBCDIC codes, making it adaptable for various programming and display purposes.
  • Horizontal Stackability: Can be stacked horizontally, useful for creating wider or more complex display panels.
  • Flexible Circuit Design: Available with both column cathode and anode options, allowing for flexibility in electronic circuit designs.
  • Ease of Installation: Designed for straightforward mounting on printed circuit boards or sockets, facilitating its integration into various projects.
  • Consistent Brightness: LEDs are categorized for luminous intensity, ensuring uniform brightness across the display.
  • Durability: Technically rugged, enhancing its reliability for various applications and operational environments.
  • Aesthetic Design: Features a standard gray surface with white dots, providing a sleek and professional look.


  • Dynamic Electronic Signage: Ideal for creating eye-catching signs and displays in retail stores, event venues, or for public information.
  • Information Panels: Suitable for displaying information in control rooms, transportation systems, or other public areas.
  • Interactive Art and DIY Projects: Can be used for interactive art installations or by hobbyists for electronics projects.
  • Educational Tools: Useful in educational settings for teaching basic electronics and programming.
  • Custom Control Panels: Perfect for building custom interfaces or control panels in various electronic devices or machinery.
  • Gaming and Entertainment Devices: Appropriate for gaming consoles, toys, and other entertainment devices that require a compact, colorful display.
  • Prototyping: Useful for prototyping small electronic components or systems where a clear and effective display is necessary.
  • Portable Electronic Devices: Its compact size and low power requirements make it suitable for portable electronic applications.

RoHs Compliance, Pb-free              Anti-Static Attention

Electrical-optical characteristics:
Filters Sort results
Reset Apply
Part No.(Row Cathode)
Part No. (Row Anode)
Peak Wavelength (nm)
Voltage typ. (v)
Voltage Max. (v)
Luminous Min.
Luminous typ.
Ultra Red
Ultra Green
Super Red
Ultra Red
Ultra Green
Package configuration & Internal circuit diagram
dot matrix LED display 3mm 5x7 bi-color

All dimensions are in millimeters(inches)
Tolerance is +-0.25(0.01″) unless otherwise note
Specifications are subject to change without notice.

Partno description:

LED dot matrix is widely used in LED information board indoor and semi-outdoor

Part No of LED dot matrix

More Information

Reflector Surface color (1st number)/ dot Lens color (2nd number):

Ref Surface ColorWhiteBlackGrayRedGreen 
Dot Epoxy ColorWater clearWhite diffusedRed DiffusedGreen DiffusedYellow Diffused 

Absolute maximum ratings (Ta= 25°C)

Parameter SDUREYGUnit
Forward Current IF 252525252530mA
Power Dissipation Pd 606060606065mW
Reverse Voltage VR 555555V
Peak Forward Current IPF (Duty 1/10 @1KHZ) 150150150150150150mA
Operation Temperature TOPR-40 to +80°C
Storage Temperature TSTG-40 to +85°C
Lead Soldering Temperature TSOL  Max.260+ 5°C for 3 sec Max. ( 1.6mm from the base of the epoxy bulb)°C

Absolute maximum ratings (Ta= 25°C)

Forward Current IF3030303030303030mA
Power Dissipation Pd7565656575110120120mW
Reverse Voltage VR55555555V
Peak Forward Current IPF (Duty 1/10 @1KHZ)150150150150150150100100mA
Operation Temperature TOPR-40 to +80°C
Storage Temperature TSTG-40 to +85°C
Lead Soldering Temperature TSOLMax.260+ 5°C for 3 sec Max. ( 1.6mm from the base of the epoxy bulb)°C
Related Information

Applied for:
trainbus information boardLED screnmessage boardindustry instrument

1. Application
The Seven Segment LED is widely applied for ordinary electronic equipment (such as office equipment,
communication equipment and household applications). Checking with BETLUX’s Sales in
advance for information on applications in which exceptional reliability is required, particularly
when the failure or malfunction of the LEDs may directly jeopardize life or health (such as in
aviation, transportation, traffic control equipment, medical and life support systems and safety

2. Storage
The storage ambient for the Seven Segment LED should not exceed 30℃ temperature or 70% relative humidity.
For extended storage out of their original packaging, it is recommended that the Seven Segment LEDs be stored
in a sealed container with appropriate desiccant, or in a desiccator with nitrogen ambient.

3. Cleaning
Avoid using any unspecified chemical solvent to clean LED . For example, Trichloroethylene, Chlorosen, Acetone, and Diflon S3MC.
Any cleaning method can only be taken under normal temperature in one minute or less if it is required.
Use water to clean the Seven Segment LED if necessary under room temperature
dry it immediately after that.

Any unsuitable stress applied to the epoxy may break bonding wires in LED
Any forming on lead pin must be done before soldering, not during or after soldering.
Avoid applying any stress to resin in order to prevent the epoxy fracture and break on bonding wire.
While forming, please use a tie bar cut or equivalent to hold or bend the pin.
2mm from the base of resin is the minimum distance for the place bending the lead pin.
Avoid bending the lead pin at the same point twice or more.

seven segment display forming caution


When soldering, leave a minimum of 2mm clearance from the base of the base of the lens to the soldering point. Dipping the lens into the solder must be avoided.

Do not apply any external stress to the lead frame during soldering while the LED is at high temperature.

Recommended soldering conditions:


IR Reflow Soldering (for SMD display)Wave SolderingSoldering Iron
Pre-Heat150-180°CPre-Heat100°C Max.Temperature300°C Max.
Pre-Heat Time120sec Max.Pre-Heat Time60sec Max.
Peak Temperature260°C Max.SolderWave260°C Max.Soldering Time3sec Max.(one time only)
Soldering Time10 sec Max.Soldering Time5sec Max.

Note: Excessive soldering temperature and/or time might result in deformation of the LED lens or failure of the LED

ESD(Electrostatic Discharge)

Static Electricity or power surge will damage the LED.

Suggestions to prevent ESD (Electrostatic Discharge):

n Use a conductive wrist band or anti-electrostatic glove when handling these LEDs

n All devices, equipment, and machinery must be properly grounded

n Work tables, storage racks, etc. should be properly grounded

n Use ion blower to neutralize the static charge which might have built up on surface of the LED’s

 plastic lens as a result of friction between LEDs during storage and handling

ESD-damaged LEDs will exhibit abnormal characteristics such as high reverse leakage current, 

low forward voltage, or “no light on” at low currents. To verify for ESD damage, check for “light on” 

and Vf of the suspect LEDs at low currents.

The Vf of “good” LEDs should be>2.0V@0.1mA for InGaN product and >1.4V@0.1mA for AlInGaP


antistatic notice-smd led

LED dirve IC by  Maxim Integrated

 MAX6959  4½-Digit LED Display Driver

 MAX6958  4½-Digit LED Display Driver

 MAX6955  7-, 14-, 16-Segment LED Display Driver

 MAX6956  LED Static Display Driver and I/O Port

 MAX6954  7-, 14-, 16-Segment LED Display Driver

 MAX6952  5 x 7 Matrix LED Display Driver

 MAX6957  LED Static Display Driver and I/O Port

MAX6950  5-Digit LED Display Driver

 MAX6951  8-Digit LED Display Driver

 ICM7212  4-Digit LED Driver

 ICM7212A  4-Digit LED Driver

 ICM7212AM  4-Digit LED Driver

 ICM7212M  4-Digit LED Driver

 ICM7218A  8-Digit LED Driver

 ICM7218B  8-Digit LED Driver

 ICM7218C  8-Digit LED Driver

 ICM7218D  8-Digit LED Driver

 MAX7221  8-Digit LED Display Driver

 MAX7219  8-Digit LED Display Driver

 provide in-depth design and IC selection help for design engineers.  Each solution is dedicated to a popular end-equipment type and features design information, circuits and a block diagram.   Within a block diagram, click on a block to view best-fit integrated circuits recommended by Maxim engineers.

When selecting power for LED systems, it’s essential to understand several key parameters to ensure safe operation, longevity, and optimal performance. Here are some steps and considerations for LED power selection:

  • Determine the Forward Voltage (Vf) of the LED(s):

Each LED has a forward voltage, which is the voltage at which the LED operates when the current is flowing through it. This value can typically be found in the LED’s datasheet.

  • Determine the Forward Current (If) of the LED(s):

The forward current is the current at which the LED is designed to operate. Running an LED at higher than its rated current can reduce its lifespan and increase the heat it produces.

  • Decide on the Configuration:

Series Configuration: When LEDs are connected in series, the forward voltages add up, but the current remains the same.

Parallel Configuration: When LEDs are connected in parallel, the forward voltage remains the same, but the currents add up. This configuration can be risky because if one LED fails or has a slightly lower forward voltage, it can cause the other LEDs to draw more current.

Calculate Total Power Requirements:

Power (W) = Total Forward Voltage (V) x Total Forward Current (A)

For example, if you have three LEDs connected in series, each with a forward voltage of 3V and a forward current of 20mA, the total power requirement would be:

Power = (3V + 3V + 3V) x 20mA = 9V x 0.02A = 0.18W

  • Select an Appropriate Power Supply:
  • Voltage Rating: The power supply voltage should match or slightly exceed the total forward voltage of your LED configuration.
  • Current Rating: The power supply’s current rating should meet or exceed the total forward current of your LED configuration.
  • Safety Margin: It’s a good practice to select a power supply that can provide at least 20% more power than your calculated requirement. This ensures the power supply isn’t operating at its maximum capacity, which can extend its life and ensure safer operation.
  • Consider Additional Features:
  • Dimming Capability: If you want to control the brightness of your LEDs, choose a power supply with dimming capabilities.
  • Overcurrent and Overvoltage Protection: To protect your LEDs, select a power supply with built-in protection mechanisms.
  • Thermal Management: Ensure that the power supply has adequate cooling, especially if it will be enclosed or in a location with limited airflow.
  • Regulation and Efficiency:A power supply with good regulation will maintain a consistent voltage output despite variations in the load. High efficiency ensures minimal power is wasted as heat.
  • Physical Size and Form Factor:Depending on where you plan to place the power supply, its size and shape may be critical factors.

In summary, when selecting power for LED systems, understanding your LED’s requirements and the configuration you plan to use is essential. Then, pick a power supply that meets those needs with some added safety margin, keeping in mind any additional features or constraints relevant to your project.

Here are some well-regarded brands in the industry:

  • Mean Well: One of the most recognized brands in the LED power supply industry, Mean Well offers a wide range of products suitable for both indoor and outdoor applications. Their units often come with features like overcurrent protection, dimming capabilities, and high efficiency.
  • Tridonic: A global leader in lighting technology, Tridonic offers LED drivers and power supplies that cater to various lighting solutions, from simple setups to advanced smart lighting systems.
  • Philips Advance Xitanium: Philips is a well-known brand in the lighting industry, and their Xitanium series of LED drivers are known for reliability and performance. They cater to both indoor and outdoor LED applications.
  • Osram: Another giant in the lighting industry, Osram offers a range of LED drivers and power supplies suitable for various applications, including architectural and street lighting.
  • LIFUD: Specializing in LED drivers, LIFUD is known for its high-quality products that cater to both commercial and residential LED lighting solutions.
  • MOSO: This brand offers a variety of LED drivers, especially for outdoor and industrial applications. Their products are known for durability and performance.
  • TDK-Lambda: With a history in power electronics, TDK-Lambda offers a range of power supplies and LED drivers suitable for various applications, emphasizing reliability and advanced features.
Need help?
Scroll to Top