Obtain 3D specification files
To examine all 3D specifications, save the files to your local drive and open them with your 3D application.
Lens colors in 3D files are solely for visual representation; consult the Datasheet for accurate lens type and color information.
In the event of a mismatch, the dimensions in the datasheet take precedence over the 3D specifications.
Introduction
In the world of electronic displays, the 0.40 inch 4-digit seven segment LED display stands out as a benchmark for efficiency and clarity. Commonly referred to as the 7 segment digital display, this technology is essential for applications requiring compact, reliable numerical displays. Detailed in resources such as the 4 digit 7 segment display 14 pin datasheet, this display technology offers a combination of practicality and performance that is unparalleled in the electronics market.
Essential Features of the 0.40 Inch 4-Digit Seven Segment LED Display
The 0.40 inch 4-digit seven segment LED display is designed with several key features that make it ideal for a wide range of applications:
- Compact Design: Its small size is perfect for devices where space is limited.
- High Visibility: Each segment includes an LED, ensuring the display is easily readable from various angles and under different lighting conditions.
- Low Power Consumption: Ideal for battery-powered devices, it offers great energy efficiency.
Diverse Applications in Modern Electronics
This type of display is utilized across various sectors due to its versatility:
- Consumer Electronics: From digital clocks and kitchen timers to more complex household gadgets.
- Automotive: Used in dashboards for displaying essential vehicle information like speed, time, and fuel level.
- Medical Equipment: Critical for devices that require clear, accurate readouts such as heart rate monitors and blood glucose meters.
Advantages of Implementing 0.40 Inch 4-Digit Displays
Adopting these displays provides multiple benefits:
- Improved Device Usability: Their ease of reading enhances the user interface of any device.
- Enhanced Durability: LEDs are known for their long lifespan and robustness against frequent use.
- Cost Efficiency: Low maintenance and replacement costs make them a cost-effective choice for mass production.
Real-World Impact: Case Studies and Testimonials
Case Study: Automotive Dashboard Upgrade
An automotive manufacturer incorporated the 0.40 inch 4-digit seven segment LED display into its latest car models’ dashboard. This resulted in a 50% decrease in display-related complaints and a notable improvement in user satisfaction regarding the vehicle’s interface.
User Testimonial
- Derek Lim, Electronics Developer: “Using the 7 segment digital display in our latest handheld devices has drastically reduced power consumption while maintaining excellent visibility.”
Conclusion
The 0.40 inch 4-digit seven segment LED display is more than just a component; it is a transformative element in the electronics design industry. With its robust functionality and adaptability, it continues to play a crucial role in enhancing the performance and usability of electronic devices across various sectors.
Call to Action: Don’t settle for less in your electronic display needs. Opt for the 0.40 inch 4-digit seven segment LED display and elevate your products’ performance and appeal. Contact us today for more information and to place your order!

Features
- 0.40-Inch Digit Height (10.26mm): Provides clear visibility for numeric displays, ideal for applications requiring small, easily readable digits.
- Dimensions (Width x Height): 43.0 x 17.4mm: Its compact size makes it suitable for various applications where space efficiency is important.
- Low Current Operation: Energy-efficient, making it suitable for both battery-powered and low-power electronic devices.
- Common Anode and Cathode Options: Offers flexibility in circuit design, accommodating different electrical configurations.
- Excellent Character Appearance: Ensures digits are displayed clearly and legibly, enhancing readability.
- High Light Output: Bright enough for easy reading under various lighting conditions.
- Easy Mounting on PC Boards or Sockets: Designed for straightforward installation, facilitating efficient integration into electronic systems.
- IC Compatible: Can be integrated with integrated circuits, making it suitable for complex electronic designs.
- Multicolor Availability: Provides options for different colors, adding versatility in design and functional use.
- Categorized for Luminous Intensity: Ensures consistent brightness levels across units, important for uniform display quality.
- Technically Rugged: Durable and reliable, capable of withstanding various operational environments.
- Standard Design: Gray Surface, White Segment: Provides a classic look with high contrast for ease of reading.
- RoHS Compliance: Meets environmental standards, adhering to regulations that restrict hazardous substances.
Applications
- Industrial Control Panels: Suitable for use in industrial environments where clear, multi-digit numeric displays are necessary for monitoring and control.
- Public Information Displays: Ideal for transportation stations, public squares, or event venues where clear, multi-digit displays are needed.
- Consumer Electronics: Appropriate for household appliances and entertainment systems requiring multiple numeric displays.
- Telecommunication Equipment: Can be used in networking devices for displaying numerical information like channel numbers or signal strength.
- Retail and Point of Sale Systems: Effective in displaying prices, quantities, or codes in retail environments.
- Healthcare Equipment: Useful in medical devices for showing various numerical data such as patient vitals or timer settings.
- Automotive Displays: Suitable for vehicle dashboards to display information like temperature, speed, or fuel levels.
- Fitness Equipment: Ideal for gym machines, showing workout data such as time, speed, or calorie count.
- Educational Tools: Used in educational settings for timers or displaying experiment data.
- Safety and Emergency Equipment: Suitable for safety systems displaying critical numerical information.
Part No. (Cathode) | Part No. (Anode) | Emitting Color | Material | Peak Wavelength (nm) | Voltage typ.(v) | Voltage max. (v) | Luminous min | Luminous typ |
|---|---|---|---|---|---|---|---|---|
BL-Q40A-44B |
BL-Q40B-44B |
ultra Blue |
InGaN/SiC |
470 |
4.2 |
65 |
100 |
|
BL-Q40A-44D |
BL-Q40B-44D |
Super Red |
GaAlAs/DH |
660 |
2.2 |
75 |
115 |
|
BL-Q40A-44E |
BL-Q40B-44E |
Orange |
GaAsP/GaP |
635 |
2.5 |
80 |
115 |
|
BL-Q40A-44G |
BL-Q40B-44G |
Green |
GaP/GaP |
570 |
2.5 |
85 |
120 |
|
BL-Q40A-44H |
BL-Q40B-44H |
Red |
GaP/GaP |
700 |
2.6 |
8 |
10.5 |
|
BL-Q40A-44PG |
BL-Q40B-44PG |
Ultra Pure Green |
InGaN/SiC |
525 |
4.2 |
110 |
195 |
|
BL-Q40A-44S |
BL-Q40B-44S |
Hi Red |
GaAlAs/SH |
660 |
2.2 |
80 |
105 |
|
BL-Q40A-44UB |
BL-Q40B-44UB |
ultra Blue |
InGaN/SiC |
470 |
4.2 |
80 |
125 |
|
BL-Q40A-44UE |
BL-Q40B-44UE |
Ultra Orange |
AlGaInP |
630 |
2.5 |
96 |
140 |
|
BL-Q40A-44UG |
BL-Q40B-44UG |
Ultra Green |
AlGaInP |
574 |
2.5 |
96 |
140 |
|
BL-Q40A-44UR |
BL-Q40B-44UR |
Ultra Red |
GaAlAs/DDH |
660 |
2.2 |
105 |
160 |
|
BL-Q40A-44UY |
BL-Q40B-44UY |
Ultra Yellow |
AlGaInP |
590 |
2.5 |
85 |
135 |
|
BL-Q40A-44W |
BL-Q40B-44W |
Ultra White |
InGaN |
- |
4.2 |
160 |
||
BL-Q40A-44Y |
BL-Q40B-44Y |
Yellow |
GaAsP/GaP |
585 |
2.5 |
80 |
115 |




