Ultra Bright Red 4-Digit 7-Segment LED Clock Display - 0.8-Inch (20mm), Common Cathode, 8.5mm Slim Profile
Product Image
Front Luminous Shot: Clear display of ultra bright red digits with white segments and black surface, emphasizing high contrast and brightness.
Dimension Labeled Diagram: Marked 71.6×25.8×8.5mm outer dimensions and 20mm character height, visualizing the slim 8.5mm depth for space-constrained devices.
Side Profile Shot: Highlight the 8.5mm ultra-thin thickness to showcase compatibility with slim panels.
Application Mockup: Integrated into a clock, instrument panel, or set-top box to demonstrate real-world use.
Parameter Close-Up: Engraved "Common Cathode (CC)" and "RoHS" logos on the back, reinforcing compliance and polarity clarity.
Core Specifications Table
| Specifications | Detail |
| Display Type | 4-digit 7-segment LED numeric display |
| Character Height | 20mm - optimized for readability at 1-4m |
| Outer Dimensions | 71.6*25.8*8.5mm - 8.5mm ultra-slim depth for slim device enclosures |
| Segment/Surface Design | White segments + black surface - anti-glare, high contrast for day/night visibility |
| Polarity | Common Cathode (CC) - compatible with mainstream CC driver circuits |
| Emitting Color | Ultra bright red (standard); optional: blue, yellow green, pure green, amber, orange, pure white |
| Luminous Intensity | 90-110mcd - bright enough for well-lit rooms, no glare in dark environments |
| Electrical Parameters | Forward voltage: 1.8-2.2V/LED; Forward current: 5-10mA/LED |
| Compliance | RoHS Compliant - free from restricted substances |
| Operational Lifespan | ≥50,000 hours - equivalent to 5+ years of daily operation |
Key Selling Points
1. Ultra Bright Red Luminosity & High Contrast for All-Time Readability
90-110mcd ultra bright red emission: Cuts through ambient light while remaining easy on the eyes in dark spaces. Perfect for clock displays where readability at any time of day is critical.
White segments + black surface: Eliminates reflection and enhances digit clarity-even from off-angles. Unlike low-contrast displays, it avoids misreading "6" as "9" or "8" as "3," ensuring accuracy for time, temperature, or numeric indicators.
2. 8.5mm Slim Profile & Compact Size for Slim Devices
Ultra-thin 8.5mm depth: Fits seamlessly into slim enclosures like set-top boxes, wall-mounted thermostats, or compact instrument panels. No need to modify device housing to accommodate bulkier displays.
71.6×25.8mm optimized footprint: The 4-digit layout balances screen real estate and space efficiency-ideal for displaying time, temperature, or channel numbers without taking up excess panel space.
3. Energy Efficiency & Long-Term Reliability
Low power consumption: Minimizes energy draw, making it suitable for battery-powered devices or 24/7 operated equipment. Reduces long-term electricity costs and extends battery life.
Stable performance: Withstands voltage fluctuations and temperature ranges of -40ºC to 85ºC, ensuring no flickering, segment dropout, or brightness degradation-even in harsh environments.
4. Easy Integration & Wide Compatibility
IC compatible: Works with mainstream 7-segment driver ICs, eliminating the need for custom driver development. Simplifies circuit design for manufacturers and speeds up product launch cycles.
Easy-to-assemble: Supports both through-hole and SMD mounting, adapting to automated production lines or manual assembly. Standardized pinouts ensure consistent installation and reduce assembly errors.
Detail Image
Target Applications
1. Clock & Time-Related Devices
Digital wall clocks: Display hour/minute or 12/24-hour format.
Kitchen timers: Show countdown time for cooking/baking.
Set-top boxes & media players: Indicate playback time or channel numbers.
2. Home Appliances
Smart thermostats: Display indoor temperature, set temperature, or humidity.
Small kitchen appliances: Show cooking time or target temperature.
Washing machines/dryers: Indicate remaining cycle time or program codes.
3. Industrial & Instrument Panels
Temperature/humidity monitors: Display real-time environmental data in factories, warehouses, or greenhouses.
Equipment status indicators: Show operation hours, production counts, or voltage levels.
Procurement & Delivery Information
| Procurement Item | Details |
| Minimum Order Quantity (MOQ) | 50 pieces |
| Unit Price Range | $0.25-$0.40/piece |
| Customization Options | Segment color, surface color, pin spacing, and decimal point position |
| Production Capacity | 15,000 pieces/day |
| Packaging | Anti-static plastic trays + cartons |
| Delivery Cycle | In-stock: 3-5 days; Customized: 7-12 days |
| Shipping Methods | Domestic: Express; Export: Sea, Air |
Quality Assurance
Raw Material Control: Uses high-grade LED chips and PC plastic for the black surface, ensuring durability and consistent luminosity.
100% Inspection: Each unit undergoes brightness testing, voltage testing, and high-low temperature cycle testing before shipment to eliminate defective products.
Warranty: 2-year warranty for non-human damage. If quality issues occur, free replacement or refund is provided.
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 |
| Chromaticity Coordinates | 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.
Office and Factory Overview
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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High-Visibility Ultra Red 4-Digit LED Clock Display Unit Images
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