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Ultra White Single Digit 38mm 7 Segment LED Display Common Anode for Digital Clock Indicator
This ultra bright 44*30.6*8mm common anode LED display is a digital clock-optimized solution, engineered for clear, eye-friendly time readouts in home, office, and smart home scenarios. With a large 17mm digit height and compact 44 x 16 x 11.85mm outer dimensions, it delivers exceptional visibility from 3-8 meters-ideal for wall-mounted clocks and desk-top timepieces.
Available in red, yellow-green, and amber emitting colors, the display features uniform segment brightness, low power consumption, and common anode polarity that ensures seamless compatibility with mainstream clock driver ICs. Built for 24/7 stable operation, it balances high luminous intensity with energy efficiency, making it a perfect choice for both battery-powered portable clocks and AC-powered smart home clock systems.
Product Image
Delivery time
| (pieces)Quantity (pieces) | 1 - 100 | 101 - 1000 | > 1000 |
| EDT (days) | 5 | 15 | pending |
Core Technical Specifications
| Category | Parameter | Specification (Digital Clock-Optimized) |
|---|---|---|
| Basic Design | Display Type | 7-Segment LED Display (2/4-digit customizable for time) |
| Outer Dimensions (L×W×H) | 44*30.6*8mm | |
| Polarity | Common Anode | |
| Optical Performance | Primary Emitting Colors | Red, Yellow-Green, Amber |
| Optional Colors | Various colors available (customizable) | |
| Key Optical Traits | High luminous intensity, uniform segment brightness | |
| Electrical Parameters | Power Performance | High efficiency, low power consumption, extremely low current |
| Quality & Compliance | Core Advantages | Stable 24/7 operation, easy PCB assembly, long lifespan |
| Compliance | RoHS Compliant (default, REACH optional) |
Key Features (Digital Clock-Optimized)
1. Clock-Centric High Visibility
17mm Large Digit Height: The oversized digit design ensures clear time readability from across the room (3-8 meters)-critical for wall clocks mounted high on walls or desk clocks placed on office tables. No need to squint to check the time, even for users with mild visual impairment.
Uniform Luminous Distribution: Segments emit consistent brightness (≤5% variation) with no hot spots or dim edges, ensuring digits like "8" and "0" are displayed crisply and distortion-free. Eliminates the common issue of uneven segment lighting that plagues low-quality clock displays.
Multi-Color Functional Aesthetics:
Red: High-visibility for alarm clocks (e.g., bright flash when alarm triggers) or night-mode clocks (low-glare red light is gentle on eyes at night).
Yellow-Green: Eye-friendly tone for daytime use, perfect for office desk clocks and living room wall clocks.
Amber: Warm, retro aesthetics for vintage-style digital clocks, matching classic home decor.
2. Energy Efficiency for 24/7 Clock Operation
Low Power Consumption & Extremely Low Current: Minimizes energy use for both battery-powered portable clocks and AC-powered smart home clocks. Extends battery life to 6-12 months for battery-operated models (vs 2-3 months for generic displays), reducing replacement hassle.
High Efficiency: Converts more electrical energy into light, reducing heat generation-critical for compact clock enclosures where heat buildup can damage components over time.
3. Manufacturer-Friendly Easy Integration
Common Anode Polarity Compatibility: Works seamlessly with standard digital clock driver ICs and microcontrollers. Simplifies circuit design for time display, alarm functions, and brightness adjustment.
Compact 44×19×9mm Size: Fits into narrow clock enclosures, whether for slim wall clocks, compact desk clocks, or smart home hub clock panels. Supports automated SMT production lines for high-volume clock manufacturing.
Easy Assembly: Standardized pinout and PCB direct-mount design enable quick, secure installation-no specialized tools or complex wiring required.
4. Long-Lasting Stability for Clock Applications
24/7 Stable Operation: Engineered to run continuously without flickering or segment failure, matching the 5-8 year service life of most digital clocks. Eliminates frequent display replacements and maintenance costs for clock manufacturers and users.
Indoor Environment Resilience: Withstands normal room temperature fluctuations (10°C-40°C) and humidity changes, making it suitable for use in homes, offices, and bedrooms.
Absolute Maximum Ratings(Ta=25ºC)
| Parameter | Symbol | Ratings | Unit |
| Forward Current(per dice) | Ipm | 20 | mA |
| Reverse Voltage(per dice) | Vr | 5 | V |
| Power Dissipation(per dice) | Pm | 80 | mW |
| Operating Temperature Range | Topr | -40~+85 | ºC |
| Storage Temperature Range | Tstg | -40~+85 | ºC |
| Solder Temperature(≤3 seconds) | Th | 260 |
ºC |
Code:Yellow Green- J
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.4 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 30 | 40 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 569 | 574 | nm |
Code:Amber/Yellow -Y
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.5 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 60 | 80 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 585 | 595 | nm |
Code:Orange -F
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.4 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 60 | 80 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 600 | 605 | nm |
Code:Super Bright Red -R
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 50 | 60 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 630 | 635 | nm |
Code:Ultra Bright Red -UR
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 80 | 100 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 625 | 635 | nm |
Code:Pure Green -G
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.6 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 180 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 515 | 525 | nm |
Code:Ultra Bright Blue -BH
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.8 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 140 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 460 | 465 | nm |
Code:Ultra Bright White -WH
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.8 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 140 | mcd | |
| LED color Temperature | K | If=10mA | 5500 | 20 | 6800 | K |
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Chromaticity Coordinates
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X/Y | If=10mA | 0.29,0.32 | 0.30,0.33 | nm |
Shenzhen Guangzhibao Technology Co., Ltd. (Brand: Light-Bo) stablished in 2006 , A company that integrates R & D, manufacturing and sales of optoelectronics LED Displays . ISO 9001 2015 Quality Management Systems certified company . With more than 15 years OEM and ODM experience .
Light Bo has been committed to provide high quality and low cost customized solutions to help customers reduce cost and enhance competitiveness.
7 Segment LED Display, Customized LED Display, Numeric LED Display, Dot matrix LED Display, widely used for home appliances,tempearture indicators, humidity indicators, refrigerator controller,thernostats indicator,heating and cooling control and so on.
FAQ(Frequently Asked Questions)
Q1 Are you trading company or manufacturer?
A: We are original manufacturer with more than 20 years experience in optoelectronic LED displays .
Q2 What is your main products?
A: Our main products include 7 Segment LED display, SMD LED Display,Dot matrix LED Display, Arrow LED display, Custom Design LED Display ,LED light bar,Through hole led, SMD LEDs,LED Backlights, and so on .
Q3 What is your MOQ?
A: Our MOQ is 1000 pcs , We can also accept sample orders and small orders with quantity less than our MOQ .
Q4 Before placing order, Can I get some samples for test?
A: Yes. We can provide 5-10 free samples for your testing, but the freight cost will be borne by the customer.
Q5 How long is your delivery time?
A: Delivery time:About 10-20 days; According to order quantity and raw materials. If you have urgent order,and we have raw materials in stock,
we can adjust our production plan to make it ready within 7-10 days .
Q6 What is your terms of payment?
A: We accept bank transfer,T/T,Western Union and Paypal with small amount. Detailes of payment methods can be negotiatble.
Q7 Can you quote me FOB prices?
A: Yes. We can quote you prices based on incoterms EXW, FOB, CIF,DDP.
Q8 How can I get your catalogue and price list?
A: Yes . Please let us know your email address or contact us from website directly for our catalogue and price list .
Q9 Can I negotiate the prices?
A: Yes, we may consider discounts for bulk orders.
Q10 How much will the shipping charges be?
A: It depends on the size of your shipment and the method of shipping.
We will offer the charge to you as you requested.
Q11 Can you do custom design products?
A: Yes , OEM&ODM service are available .We can customize the sizes,led color and functional icons according to your requirements.
Q12 If I send my design , can you make it for myself only ,and will not show it to any one else?
A: Yes , we will not show it or sell to others without your authorization.
Q13 What will be the samples lead time for customized products?
A: Samples lead time will be about 20-25 working days after receiving mold cost and mold drawing approval from customers .
Q14 What is the shipping methods?
A:We usually ship the goods by DHL, FEDEX,UPS,EMS,BY AIR,BY SEA etc, also you can choose the other way that best for you.
Q15 How do you ensure the quality of your products?
A: we are ISO 9001 QMS ceritified manufacturers with more than 20 years experience ,We conduct twice 100% percent test for all of our products before shipment .
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