0.30 inch dual-digit seven segment led display | Orange

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Series No:BL-D30G-21
Specification Download:
15.5 × 15 × 7.2 mm
0.30 inch double numeric LED display Unlocking the Secrets of the 0.30 Inch Dual-Digit Seven Segment LED Display In the intricate world of electronic displays, the 0.30 inch dual-digit seven segment LED display stands as a testament to innovation and precision. Known for its remarkable clarity and efficiency, the "7 segment indicator" has become a staple in digital display technology. This comprehensive article delves into the unique features, widespread applications, undeniable benefits, and real-world success stories associated with this advanced display tool, aiming to provide valuable insights for electronics manufacturer engineers, purchasers, administrators, and anyone with a keen interest in the latest electronic display solutions. Introduction The 7 segment indicator, particularly in its dual-digit form, exemplifies cutting-edge display technology. Ideal for presenting numerical information with unparalleled clarity, this display type has revolutionized the way we view data in electronic devices. As we explore the 0.30 inch dual-digit seven segment LED display, we uncover its significance in modern electronics, highlighting its applications and the profound impact it has on both developers and end-users. Features and Broad Applications The core attribute of the 0.30 inch display is its ability to provide clear and concise numeric data through seven distinct segments. This "7 segment 2" configuration is versatile enough to be employed in various devices, from consumer electronics like digital clocks and calculators to more specialized equipment such as medical monitors and industrial control panels. Its compact size coupled with high visibility makes it an essential component in space-constrained applications. Benefits: Efficiency and Reliability Adopting the 0.30 inch dual-digit seven segment LED display brings numerous advantages. Notably, its energy efficiency and long-lasting durability stand out, making it a sustainable choice for environmentally conscious projects. Additionally, its reliability and ease of programming facilitate a smoother development process, allowing for faster time-to-market for new products. Real-World Success Stories Through case studies, the tangible impact of the "2 digit display" becomes evident. One such example involves its integration into portable healthcare devices, where its precision and readability have significantly enhanced patient care. User testimonials further validate these findings, with many engineers praising the display's performance and versatility in product design and application. Conclusion: The Future of Digital Displays The exploration of the 0.30 inch dual-digit seven segment LED display reveals its pivotal role in advancing digital display technology. Its combination of efficiency, reliability, and versatility makes it a cornerstone in the development of next-generation electronic devices. As we look toward the future, it's clear that this display technology will continue to shape innovations in the electronics industry. Embrace Advanced Display Technology Step into the future of electronics with the 0.30 inch dual-digit seven segment LED display. Discover how this technology can transform your projects, delivering unmatched clarity and efficiency.
0.30 inch dual-digit seven segment led display
0.30 inch dual-digit seven segment led display


  • 0.30 Inch Digit Height (7.62mm): Provides clear and visible numeric displays, ideal for applications where compactness is crucial.
  • Compact Dimensions: Measuring 15.50 x 15.00 mm, this display is well-suited for small-scale applications.
  • Low Current Operation: Energy-efficient, reducing power consumption, beneficial in battery-operated or power-sensitive devices.
  • Common Anode and Common Cathode Availability: Offers flexibility in circuit design, accommodating a variety of electronic configurations.
  • Excellent Character Appearance: Ensures sharp and clear numeric displays for ease of 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, easing the assembly process.
  • IC Compatible: Can be easily interfaced with various integrated circuits, making it suitable for complex electronic systems.
  • Multicolor Availability: Available in different colors, providing 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, 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 compact spaces like electronic gadgets, small appliances, and handheld devices.
  • Electronic Scoreboards: Suitable for small sports equipment or game devices where space is limited.
  • Industrial Equipment: Used in small machinery and equipment for displaying measurements, counts, or operational data.
  • Consumer Electronics: Incorporated in compact household appliances, like small kitchen timers, digital thermometers, or portable music players.
  • Medical Devices: Employed in small medical equipment for showing readings and numerical data.
  • Automotive Displays: Applicable for small information displays in vehicles, such as dashboard indicators or accessory displays.
  • Control Panels: Used in small control panels for machinery or electronic devices, providing clear numeric readouts.
  • Telecommunication Equipment: Suitable for network devices, small communication equipment, or wearables 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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