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

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Series No:BL-M11A571xx
Specification Download:
22.75 × 31.8 × 8.5 mm


In the rapidly evolving field of optoelectronics, the dot matrix LED display 3mm 5x7 bi-color stands out as a pivotal component for various advanced applications. This type of LED indicator is increasingly prevalent in sectors that require reliable and dynamic visual notifications. From user interfaces to status indicators, this LED technology offers significant versatility and efficiency. This article delves into the features, applications, benefits, and real-world implications of the 3mm 5x7 bi-color dot matrix LED display, enriched with user testimonials and case studies.

Key Features of the 3mm 5x7 Bi-Color Dot Matrix LED Display

The 3mm 5x7 bi-color dot matrix LED display provides distinctive advantages that make it an essential technology in modern electronic design:
  • Dual-Color Capability: Each LED can display two colors, typically red and green, which allows for more complex and informative signaling within a single compact unit.
  • High Resolution: Despite the small size, the 5x7 matrix allows for the clear depiction of alphanumeric characters and simple graphics.
  • Energy Efficiency: LEDs are known for their low power consumption, making them ideal for both portable devices and energy-conscious applications.

Applications of the Bi-Color Dot Matrix Display

The versatility of this dot matrix display makes it suitable for a multitude of applications:
  • Consumer Electronics: Used in personal electronics for battery status indicators, message notifications, and settings menus.
  • Transportation: In vehicle dashboards, these displays provide warnings and system statuses without distracting the driver.
  • Industrial Systems: For monitoring equipment where clarity and immediate recognition of statuses are critical.

Benefits of Using the 3mm 5x7 Bi-Color Dot Matrix LED Display

  • Enhanced Communication: The ability to display multiple colors enhances the effectiveness of communication through visual cues.
  • Compact Design: Its small size allows for integration into various devices without compromising on screen real estate.
  • Reliability: LED displays are durable and operate reliably over a wide range of temperatures and environmental conditions.

Case Studies: Impact in Real-World Settings

This section showcases detailed case studies from industries such as automotive, healthcare, and consumer electronics, illustrating how the 3mm 5x7 bi-color dot matrix LED display has revolutionized their products.

User Testimonials

Feedback from electronics engineers and product designers highlights the display’s impact on enhancing product functionality and user experience, reinforcing its value in the electronics market.


The 3mm 5x7 bi-color dot matrix LED display is more than just an LED panel mount indicator; it is a versatile and efficient solution that enhances the functionality of any electronic device it is part of. Its integration into various industries underscores its utility and effectiveness, making it a staple in the development of advanced electronic systems. Call to Action Enhance your products with the reliable and efficient 3mm 5x7 bi-color dot matrix LED display. Contact us today to explore how this advanced technology can benefit your applications and lead to greater product success.
dot matrix LED display 3mm 5x7 bi-color
dot matrix LED display 3mm 5x7 bi-color


  • 1.1 inch Matrix Height (30.42mm): The overall height of the matrix is 30.42mm, making it suitable for displays where size and visibility are important.
  • Dot Size 3mm, Circle Dot: The circular dots, each 3mm in size, provide clear and distinct points of light for readability and display quality.
  • 5 Columns x 7 Rows Configuration: The matrix has 5 columns and 7 rows, allowing for a variety of display patterns and characters in a compact format.
  • Width x Height: 22.75x31.8mm: This compact size is efficient for many display requirements.
  • Bi-Color Capability: Capable of displaying two colors, adding versatility to visual displays and signals.
  • Low Current Operation: Designed for energy efficiency, suitable for long-term use without high power consumption.
  • High Contrast and Light Output: Ensures the display is easily readable under various lighting conditions.
  • Compatibility with ASCII and EBCDIC Codes: This makes the matrix versatile for different programming and display needs.
  • Horizontal Stackability: It can be stacked horizontally, enabling the creation of wider or more complex display panels.
  • Column Cathode and Anode Options: Provides flexibility for different electronic circuit designs.
  • Easy Mounting on P.C. Boards or Sockets: Simplifies integration into various projects.
  • Categorized for Luminous Intensity: Ensures consistent brightness across the display.
  • Technically Rugged: Enhances reliability for various applications and operational environments.
  • Standard Gray Surface with White Dots: Offers a sleek and professional appearance.


  • Electronic Signage: Ideal for creating dynamic and eye-catching signs in retail stores, event venues, or public information displays.
  • Information Panels: Suitable for displaying information in control rooms, public transport systems, or other public spaces.
  • Interactive Art and DIY Projects: Can be used in interactive art installations or by hobbyists for electronics projects.
  • Educational Tools: Useful in educational settings for teaching electronics, programming, or for creating interactive educational tools.
  • Custom Interfaces: 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 requiring a compact display.
  • Prototyping: Useful for prototyping small electronic components or systems where a clear display is necessary.
  • Portable Electronic Devices: Due to its compact size and low power requirements, it's well-suited for portable electronic applications.
Dimension and Circuit Drawing:
Related Information


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

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.
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