High-Visibility Ultra Red 4-Digit LED Clock Display Unit

Product Specification

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 (e.g., "12:34" for clock scenarios) 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 (0.8-inch) 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 (e.g., set-top boxes, compact thermostats).
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

Specification	Details
Display Type	4-digit 7-segment LED numeric display (ideal for clock/time-related use)
Character Height	20mm (0.8 inch) - optimized for readability at 1-4m (e.g., wall clocks, TV set-top boxes)
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 (lead, mercury, etc.)
Operational Lifespan	≥50,000 hours (continuous use) - 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 (e.g., living room ceiling lights, office lamps) while remaining easy on the eyes in dark spaces (e.g., bedroom night clocks). 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 (where internal space is limited), 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 ("10:05"), temperature ("25ºC"), or channel numbers ("120") without taking up excess panel space.
3. Energy Efficiency & Long-Term Reliability
Low power consumption (5-10mA/LED): Minimizes energy draw, making it suitable for battery-powered devices (e.g., portable thermometers) or 24/7 operated equipment (e.g., always-on set-top boxes). Reduces long-term electricity costs and extends battery life.
Stable performance: Withstands voltage fluctuations (1.8-2.2V adaptive) and temperature ranges of -40ºC to 85ºC (industrial grade), ensuring no flickering, segment dropout, or brightness degradation-even in harsh environments (e.g., hot kitchen appliances, cold garage thermostats).
4. Easy Integration & Wide Compatibility
IC compatible: Works with mainstream 7-segment driver ICs (74HC595, TM1638, MAX7219), 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 (optional), adapting to automated production lines or manual assembly. Standardized pinouts ensure consistent installation and reduce assembly errors.

Target Applications
1. Clock & Time-Related Devices
Digital wall clocks: Display hour/minute (e.g., "09:45") or 12/24-hour format.
Kitchen timers: Show countdown time (e.g., "00:59") for cooking/baking.
Set-top boxes & media players: Indicate playback time (e.g., "30:15") or channel numbers (e.g., "0120").
2. Home Appliances
Smart thermostats: Display indoor temperature (e.g., "22ºC"), set temperature (e.g., "25ºC"), or humidity (e.g., "50%").
Small kitchen appliances (air fryers, microwaves): Show cooking time (e.g., "01:20") or target temperature (e.g., "180ºC").
Washing machines/dryers: Indicate remaining cycle time (e.g., "25min") or program codes (e.g., "04").
3. Industrial & Instrument Panels
Temperature/humidity monitors: Display real-time environmental data (e.g., "28ºC/60%RH") in factories, warehouses, or greenhouses.
Equipment status indicators: Show operation hours (e.g., "125h"), production counts (e.g., "500pcs"), or voltage levels (e.g., "220V").
 

Procurement & Delivery Information

Procurement Item	Details
Minimum Order Quantity (MOQ)	50 pieces (sample orders: 5-10 pieces available)
Unit Price Range	$0.25-$0.40/piece (bulk orders ≥1000 pieces: tiered discounts apply)
Customization Options	Segment color, surface color, pin spacing, and decimal point position
Production Capacity	15,000 pieces/day
Packaging	Anti-static plastic trays (100 pieces/tray) + cartons (shockproof)
Delivery Cycle	In-stock: 3-5 days; Customized: 7-12 days (including testing)
Shipping Methods	Domestic: Express (SF, ZTO); Export: Sea (FOB Shenzhen), Air (DHL/UPS)

Quality Assurance
Raw Material Control: Uses high-grade LED chips (Taiwan Epistar) and PC plastic (heat-resistant up to 120ºC) for the black surface, ensuring durability and consistent luminosity.
100% Inspection: Each unit undergoes brightness testing, voltage testing, and high-low temperature cycle testing (-40ºC~85ºC) before shipment to eliminate defective products.
Warranty: 1-year warranty for non-human damage. If quality issues occur, free replacement or refund is provided (batch number and test report required).

• 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 .

LIGHTBO 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 IWhat will be the samples lead time for customzied 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.