Welcome to Shenzhen Guangzhibao Technology Co., Ltd!
You are here: 
Ultra Bright Blue 10.16mm (0.4-Inch) 4-Digit 7-Segment Common Cathode LED Display for Digital Timers
Product Overview
Introducing the Ultra Bright Blue 0.4-Inch 4-Digit 7-Segment Common Cathode LED Display—a modern, high-visibility solution engineered for digital timers, LED clocks, and compact home appliances. Designed to prioritize sleek aesthetics, clear time readouts, and energy efficiency, this 4-digit display excels at showing time-based metrics: countdown timers, clock time or process durations.
Its 10.16mm (0.4-inch) character height balances readability and compactness, while the 40.5×16×7mm form factor fits into slim devices—from portable kitchen timers to smart set-top box displays. The white segments on a black surface create sharp contrast with ultra bright blue light (462-465nm), cutting through ambient glare without eye strain, and adding a modern touch to home/industrial devices.
With common cathode polarity, low power consumption, and RoHS compliance, this display combines durability, eco-friendliness, and contemporary design—ideal for 24/7 operation in digital timers and timekeeping devices.
Product Image
Key Features (Digital Timer & Clock-Optimized)
1. Ultra Bright Blue Light for Modern Aesthetics & Visibility
Vivid Blue Illumination (80-100mcd, 462-465nm): Ultra bright blue light delivers a sleek, modern look—perfect for devices where aesthetics matter. It stands out in bright environments and remains soft on the eyes in dim spaces, avoiding harsh glare.
White Segments on Black Surface: High contrast eliminates "washout" and ensures digits (0-9) and time symbols stay sharp—no misreading "10:00" as "16:00".
Even Luminous Distribution: Light is uniformly spread across each segment, so every bar of digits is consistent—guarantees accurate time recognition at a glance.
2. Compact Design & Easy Integration
Slim Dimensions (40.5×16×7mm): Fits into dense PCB layouts or slim device enclosures —no need to enlarge designs for 4-digit time readouts.
Common Cathode Polarity: Works with standard timer/clock driver ICs—simplifies circuit design, no need for custom polarity adapters, and integrates seamlessly with timekeeping firmware .
Easy Assembly: Designed for PCB direct-mounting, compatible with automated production lines—speeds up manufacturing for high-volume devices and ensures consistent alignment in control panels.
3. Energy Efficiency & Stable Performance
Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes energy use—extends battery life for portable timers and reduces electricity costs for plugged-in clocks.
High Efficiency: Optimized forward voltage (2.8-3.2V) ensures minimal power waste while maintaining high brightness—aligns with eco-friendly device trends.
Stable Operation in Daily Environments: Withstands temperature fluctuations (-10°C to 50°C, typical for homes/offices) and minor vibrations—maintains consistent brightness, no flickering during time updates.
Long Lifespan (50,000+ Hours): High-quality blue LED chips match the 8–10 year service life of most timers/clocks—eliminates frequent display replacements, reducing maintenance hassle for users.
4. Versatility & Compliance
Multi-Color Options: Beyond ultra bright blue, available in red (for alerts), green, amber, orange, white, and more—flexible for functional cues or brand-specific device aesthetics.
RoHS Compliant: Free from lead, mercury, and harmful substances—safe for home use and export to global markets, meeting consumer electronics safety standards.
| Category | Parameter | Specification (Digital Timer/Clock-Optimized) |
| Basic Design | Display Type | 4-Digit 7-Segment LED Display |
| Polarity | Common Cathode | |
| Character Height | 0.4 inches (10.16mm) | |
| Outer Dimensions (L×W×H) | 40.5 × 16 × 7mm | |
| Segment/Surface Finish | White segments on Black Surface | |
| Optical Performance | Emitting Color | Primary: Ultra Bright Blue; Optional: Red/green/amber/orange/white |
| Wavelength (Blue) | 462-465nm | |
| Luminous Intensity (IV) | 80-100 mcd | |
| Electrical Parameters | Forward Voltage (VF) | 2.8-3.2V (blue/green/white); 1.8-2.2V (red/amber/orange) |
| Forward Current | 5-10mA per LED | |
| Power Consumption | Low (energy-efficient for continuous timekeeping) | |
| Quality & Compliance | Core Advantages | Even light distribution, high efficiency, stable performance, easy assembly |
| Compliance | RoHS Compliant |
Applications
This display is tailored for timekeeping devices and modern electronics, including:
Digital Timers: Kitchen countdown timers , fitness timers or industrial process timers
LED Clocks: Slim wall clocks, desk clocks or smart home clocks
Home Appliances: Microwave ovens , electric ovens or air fryers
Instrument Panels: Set-top boxes, audio equipment or portable generators
Why Choose This Display for Digital Timers?
Modern Aesthetics: Ultra bright blue light adds a sleek look to devices—appealing for premium home appliances or smart electronics.
Time Readout Clarity: High contrast + even light ensure time are readable at a glance—avoids missing "time's up" alerts.
Space-Saving Fit: Compact dimensions work for portable timers and slim clocks—no need to compromise device design for multi-digit time displays.
Energy & Cost Efficiency: Low current use extends portable timer battery life; long lifespan reduces maintenance costs.
Global Compliance: RoHS certification simplifies export to international markets, aligning with consumer time device safety standards.
Order & Logistics Information
Minimum Order Quantity (MOQ): 300 pieces for standard ultra bright blue models; 500 pieces for custom colors/configurations.
Packing: Anti-static EPE + carton
Delivery Time: 5–7 days for standard models; 10–12 days for custom colors.
Transport: Express , Air , Ocean
Product Parameters
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.
Products Applications
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
Certifications
Office and Factory Overview
Company Exhibitions
Shipping Services
FAQ
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 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 .
(0)
Lucy