0.39 inch dual-digit seven segment led display | Ultra Pure Green

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BL-D39C-21PG

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Ultra Pure Green

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color
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BL-D39C-21B
ultra Blue
InGaN/SiC
470
4.2
35
45
BL-D39C-21D
Super Red
GaAlAs/DH
660
2.2
65
95
BL-D39C-21E
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GaAsP/GaP
635
2.5
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55
BL-D39C-21G
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570
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BL-D39C-21H
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BL-D39C-21PG
Ultra Pure Green
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BL-D39C-21S
Hi Red
GaAlAs/SH
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2.2
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90
BL-D39C-21UB
ultra Blue
InGaN/SiC
470
4.2
55
70
BL-D39C-21UE
Ultra Orange
AlGaInP
630
2.5
70
115
BL-D39C-21UG
Ultra Green
AlGaInP
574
2.5
70
100
BL-D39C-21UR
Ultra Red
GaAlAs/DDH
660
2.2
100
155
BL-D39C-21UY
Ultra Yellow
AlGaInP
590
2.5
70
115
BL-D39C-21W
Ultra White
InGaN
-
4.2
70
BL-D39C-21Y
Yellow
GaAsP/GaP
585
2.5
35
55
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Series No:BL-D39C-21
Specification Download:
Dimension
19.9 × 12.8 × 7 mm
Description:
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0.39 inch double numeric LED display

Introduction to Seven Segment Display Technology

The seven segment display, especially in its 0.39 inch dual-digit configuration, represents a significant stride in electronic display technology. It's designed to show numbers and a limited set of characters by illuminating specific segments, offering unparalleled clarity and simplicity for various applications.

Unveiling the Features

This 2 segment display is prized for its compact size, exceptional brightness, and low power consumption, making it a prime choice for devices where space is limited but visibility is paramount.

Versatile Applications

From household appliances and consumer electronics to advanced medical equipment and industrial machinery, the 0.39 inch dual-digit seven segment LED display serves a broad spectrum of applications. Its ability to deliver clear and instant data output makes it invaluable in environments demanding quick and accurate information display.

The Benefits Unveiled

Adopting these displays offers numerous advantages, including enhanced device usability, improved energy efficiency, and superior readability. These benefits not only cater to the needs of manufacturers aiming to innovate but also enhance the user experience, making devices more intuitive and accessible.

Case Studies: Seeing the Difference

Real-world applications of the 7 segment display 2 demonstrate its transformative impact. For instance, in portable medical devices, its clarity and reliability have directly contributed to improved patient monitoring, showcasing the display's vital role in healthcare advancements.

User Testimonials: In Their Own Words

Feedback from those who have implemented the 0.39 inch dual-digit seven segment LED display in their projects underscores its value. Engineers commend its versatility and ease of integration, while purchasers appreciate its cost-effectiveness and the significant advantages it brings to product development and inventory management.

Looking Ahead: The Future of Digital Displays

The ongoing evolution of seven segment display technology hints at even more innovative applications and improvements. As the electronics industry continues to advance, the 0.39 inch dual-digit seven segment LED display remains at the forefront, promising new possibilities for enhancing digital communication and user interaction.

Conclusion: The Path Forward with Seven Segment Displays

The 0.39 inch dual-digit seven segment LED display stands as a testament to the enduring importance of efficient, reliable display technology in the digital age. Its extensive applicability and the array of benefits it offers make it a cornerstone of modern electronic devices. As we look to the future, the potential of these displays to innovate and improve the way we interact with technology is boundless.
0.39 inch dual-digit seven segment led display
0.39 inch dual-digit seven segment led display

Features

  • 0.39 Inch Digit Height (10.0mm): Offers clear and visible numeric displays, ideal for readability in compact spaces.
  • Compact Dimensions: Measuring 19.9 x 12.8 mm, it's well-suited for small-scale applications where space is limited.
  • Low Current Operation: Energy-efficient design, reducing power consumption and making it ideal for battery-powered or energy-sensitive devices.
  • Common Anode and Common Cathode Availability: Flexible design 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 the process of integration onto printed circuit boards or into sockets, facilitating ease of assembly.
  • IC Compatible: Can be easily interfaced with various integrated circuits, suitable for complex electronic designs.
  • Multicolor Availability: Available in different colors, providing options for customization and various design requirements.
  • 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 following environmental and health safety standards.

Applications

  • Digital Clocks and Timers: Ideal for timekeeping devices in various environments, such as schools, offices, and public transport systems.
  • Electronic Scoreboards: Suitable for sports arenas, gyms, and event venues for displaying scores or other numerical information.
  • Industrial Equipment: Used in machinery and control systems for displaying measurements, counts, or operational data.
  • Consumer Electronics: Incorporated in household appliances like microwaves, ovens, washing machines, and audio equipment for setting displays.
  • Medical Devices: Employed in medical equipment for showing readings, timers, and other vital data.
  • Automotive Displays: Applicable for small indicator displays in vehicle dashboards, such as warning lights or small gauge readouts.
  • Control Panels: Used in control panels in machinery, elevators, or HVAC systems, providing clear numeric readings.
  • Telecommunication Equipment: Incorporated in network hardware for displaying signal strength or channel numbers.
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Dimension and Circuit Drawing:
Related Information

Soldering

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

 product.

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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