0.50 inch dual-digit seven segment led display | Yellow

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Series No:BL-D50I-21
Specification Download:
25 × 19 × 8 mm
0.50 inch double numeric LED display Illuminating Precision: The 0.50 Inch Dual-Digit Seven Segment LED Display In the intricate world of electronic displays, the 0.50 inch dual-digit seven segment LED display marks a significant milestone in both functionality and efficiency. Known for its common cathode seven segment configuration, this compact yet powerful display technology has revolutionized how information is visually communicated across a myriad of applications. This detailed exploration delves into the features, applications, benefits, alongside illuminating case studies and user testimonials, catering to the informational needs of electronics manufacturer engineers, purchasers, and administrators. A Closer Look at the Dual-Digit Seven Segment LED Display The seven segment 2 digit display, particularly the common cathode variant, allows for simplified circuit design by connecting all negative ends (cathodes) of the segment LEDs to a common ground. This design not only facilitates easier control but also contributes to the longevity and reliability of the display. The 0.50 inch size strikes a perfect balance between readability and space conservation, making it an ideal choice for compact electronics where space is a premium. Versatile Applications Unleashed From consumer electronics like digital watches and calculators to more sophisticated applications in automotive dashboards, medical equipment, and industrial control panels, the dual 7 segment display demonstrates unparalleled versatility. Its capacity to present numbers and some characters in a clear, unambiguous manner makes it a preferred choice for devices requiring precise, at-a-glance data presentation. Unveiling the Benefits The 0.50 inch dual-digit seven segment led display is not just about displaying numbers; it’s about doing so with unmatched energy efficiency, durability, and ease of integration. These displays are incredibly power-efficient, ensuring that devices not only have prolonged operational lifetimes but also adhere to energy conservation standards. The robustness of LED technology further ensures that these displays can withstand extensive use without dimming or failure, making them a cost-effective solution for both manufacturers and end-users. Impactful Real-World Case Studies and Testimonials The tangible benefits of the 2 digit display are best exemplified through case studies. One such case involved the deployment of these displays in a line of high-end coffee machines, where the clarity and reliability of the display significantly enhanced user interaction, contributing to a positive user experience and increased sales. User testimonials further reinforce this sentiment, with one electronics developer praising the display's ease of programming and integration as a game-changer in product development. Conclusion: A Future Bright with LED Displays The journey of the 0.50 inch dual-digit seven segment LED display from a technical component to a pivotal part of user-friendly electronic design highlights its indispensable role in modern electronics. As technology continues to evolve, the significance of reliable, efficient, and versatile display solutions like this cannot be overstated. For professionals in the electronics industry, leveraging the advantages of these displays means not only meeting but exceeding the ever-growing expectations for high-quality electronic devices.
0.50 inch dual-digit seven segment led display
0.50 inch dual-digit seven segment led display


  • 0.50 Inch Digit Height (12.70mm): Offers clear and visible numeric displays, suitable for readability at a reasonable distance.
  • Compact Dimensions: Measuring 25.00 x 19.00 mm, it's suitable for applications where space efficiency is important.
  • Low Current Operation: Energy-efficient design, beneficial for reducing power consumption, particularly in battery-operated devices.
  • Common Anode and Common Cathode Availability: Provides flexibility in circuit design to accommodate different electronic configurations.
  • Excellent Character Appearance: Ensures sharp and clear numeric displays for easy readability.
  • High Light Output: Bright display ensures visibility under various lighting conditions.
  • Easy Mounting on PC Boards or Sockets: Designed for straightforward integration onto printed circuit boards or into sockets, simplifying the assembly process.
  • IC Compatible: Can be easily interfaced with various integrated circuits, making it suitable for complex electronic designs.
  • Multicolor Availability: Available in different colors, offering options for customization and various design needs.
  • Categorized for Luminous Intensity: Ensures uniform brightness across units for consistent performance.
  • Technically Rugged: Durable and reliable, built to withstand various operational conditions and environments.
  • Standard Design: Features a gray surface with white segments, providing a classic and clear display appearance.
  • RoHS Compliance: Manufactured following environmental and health safety standards.


  • Digital Clocks and Timers: Ideal for timekeeping devices in various settings, including schools, offices, and public areas.
  • Electronic Scoreboards: Suitable for sports arenas and event venues for displaying scores or other numerical information.
  • Industrial Equipment: Used in machinery and equipment for displaying measurements, counts, or operational data.
  • Consumer Electronics: Incorporated in 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 in car dashboards, such as fuel level, temperature, or other 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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