0.43 inch dual-digit seven segment led display | Ultra Orange

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Product Series
Series No:BL-D43C-21
Specification Download:
23.8 × 18.8 × 6.5 mm
0.43 inch double numeric LED display In the cutting-edge world of electronic display technology, the 0.43 inch dual-digit seven-segment LED display has emerged as a cornerstone for developers seeking clarity, efficiency, and adaptability. This detailed exploration sheds light on the 7 segment datasheet, the practicality of the dual digit LED display, and delves into the myriad applications, benefits, alongside enriching case studies and user testimonials. Designed for the discerning electronics manufacturer engineer, purchaser, and administrator, this article elucidates why this display technology is not just an innovation but a necessity in modern electronics design and implementation.

Unpacking the Features

The 0.43 inch dual-digit seven-segment LED display distinguishes itself through its compact design, high visibility, and low energy consumption. Drawing insights from the 7 segment datasheet, each segment within the display is precisely engineered to provide optimal brightness while minimizing power usage, making it an eco-friendly option for a variety of applications. Furthermore, the flexibility offered by configurations such as 7 seg common anode allows for easy integration into diverse electronic systems.

Versatile Applications

The application range of the 0.43 inch dual-digit seven-segment LED display is vast, spanning from consumer electronics like digital watches and calculators to more complex systems such as healthcare monitoring devices and automotive dashboards. The two digit seven segment display provides a straightforward, user-friendly means of data presentation, crucial for readability and interaction in both everyday and specialized electronic devices.

Key Benefits

One of the prime advantages of incorporating the 0.43 inch dual-digit seven-segment LED display into electronic projects is its exceptional efficiency. Not only does it operate on low power, but it also offers longevity, thereby reducing the need for frequent replacements and maintenance. Its robustness and reliability under various environmental conditions make it a preferred choice among electronics professionals looking to enhance product durability and performance.

Impactful Innovations: Case Studies

The transformative impact of the 0.43 inch dual-digit seven-segment LED display is best illustrated through real-world applications. A noteworthy case study involves its integration into a new line of energy-efficient home appliances. This move not only improved the appliances' user interface but also significantly contributed to their market success, underscoring the display's role in elevating product value and consumer experience.

Endorsements from the Field: User Testimonials

The accolades from electronics professionals further validate the display's efficacy and versatility. A seasoned engineer highlighted, "The dual digit LED display has revolutionized our control panel designs, offering both aesthetic appeal and enhanced functionality, which has been highly appreciated by our clients."

Conclusion: The Future is Bright

The 0.43 inch dual-digit seven-segment LED display represents a significant leap forward in electronic display technology. Its blend of efficiency, functionality, and versatility makes it indispensable for contemporary electronics projects. As the industry continues to evolve, the demand for such innovative solutions is set to grow, promising a bright future for electronics professionals who leverage this technology. Call to Action: Transform your electronics projects with the advanced 0.43 inch dual-digit seven-segment LED display. Embrace the future of display technology today.
0.43 inch dual-digit seven segment led display
0.43 inch dual-digit seven segment led display


  • 0.43 Inch Digit Height (11.00mm): Provides clear and visible numeric displays, ideal for applications where space is limited but readability is crucial.
  • Compact Dimensions: The size of 23.80 x 18.80 mm makes it suitable for small-scale electronic devices.
  • Low Current Operation: Energy-efficient, reducing power consumption and making it ideal for battery-powered or energy-sensitive applications.
  • Common Anode and Common Cathode Availability: Offers design flexibility, accommodating different circuit configurations.
  • Excellent Character Appearance: Ensures sharp and clear numeric displays for ease of readability.
  • High Light Output: Bright display ensures visibility in various lighting conditions.
  • Easy Mounting on PC Boards or Sockets: Simplifies integration onto printed circuit boards or into sockets, facilitating easy assembly.
  • IC Compatible: Can be easily interfaced with various integrated circuits, making it suitable for complex electronic systems.
  • Multicolor Availability: Comes in different colors, providing options for customization and various design requirements.
  • Categorized for Luminous Intensity: Ensures consistent brightness across units for uniform appearance and performance.
  • Technically Rugged: Durable and reliable, built to withstand various operational conditions and environments.
  • Standard Design: Features a gray surface with white segments, offering a classic and clear display appearance.
  • RoHS Compliance: Manufactured in compliance with environmental and health safety standards.


  • Digital Clocks and Timers: Ideal for timekeeping devices in various environments such as schools, offices, and household appliances.
  • Electronic Scoreboards: Suitable for displaying scores, times, or other numerical information in sports arenas and event venues.
  • Industrial Equipment: Used in machinery for displaying measurements, counts, or operational data.
  • Consumer Electronics: Incorporated in household appliances like microwave ovens, washing machines, and audio equipment for setting displays.
  • Medical Devices: Employed in medical equipment for showing readings, timers, and numerical data.
  • Automotive Displays: Useful for displaying information on car dashboards, such as temperature, fuel level, or warning indicators.
  • Control Panels: Applicable in control panels for machinery, HVAC systems, and industrial systems for clear numeric readouts.
  • Telecommunication Equipment: Suitable for network devices and communication equipment for displaying numeric information.
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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