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Ultra bright Red 4 Digit 0.4inch LED Display 7 Segment Common Cathode for Instrument Panel
Product Overview
This 0.4-inch 4-digit common cathode 7-segment LED display is an instrument panel-optimized solution, engineered for clear, reliable numeric readouts of temperature, humidity, process parameters, and equipment status. Designed with yellow segments on a black surface and ultra bright white light (6000–6800K color temperature), it delivers exceptional contrast that cuts through ambient light (factory overhead lamps, home room lighting) without eye strain—ideal for viewing distances of 0.5–3 meters (typical for instrument panels and home appliances).
With 4-digit capacity (supports values 0000–9999, plus decimal points for precision metrics), it fits seamlessly into compact PCB layouts of set-top boxes, home appliance controllers, and industrial process monitors. The common cathode polarity ensures compatibility with mainstream driver ICs, while low power consumption and long lifespan make it suitable for 24/7 operation in diverse scenarios—from residential set-top boxes to industrial process controllers.
Product Description
Core Technical Specifications
| Category | Parameter | Specification (Instrument Panel-Optimized) |
| Basic Design | Display Type | 4-Digit 7-Segment LED Display |
| Polarity | Common Cathode | |
| Digit Height | 0.4 inch (≈10.2mm) | |
| Segment/Surface Finish | Yellow Segments on Black Surface | |
| Optical Performance | Primary Emitting Color | Ultra Bright White |
| Color Temperature | 6000–6800K (cool white, high contrast) | |
| Luminous Intensity (IV) | 80–100 mcd | |
| Optional Emitting Colors | Red, Blue, Green, Amber, Orange, White | |
| Electrical Parameters | Forward Voltage (VF) | 2.8–3.2V per LED (white/blue/green) |
| Forward Current | 5–10mA per LED | |
| Power Consumption | Low (extremely low current draw) | |
| Quality & Compliance | Core Advantages | High luminous intensity, uniform segment brightness, stable performance, easy assembly |
| Compliance | RoHS Compliant |
Key Features (Instrument Panel-Optimized)
1. High-Contrast Visibility for Precision Metrics
Ultra Bright White Light: Cool white light with 80–100mcd intensity ensures crisp readability of 4-digit values even in bright ambient environments—prevents misreading critical parameters in industrial process control or home appliance operation.
Yellow Segments + Black Surface Contrast: The color combination amplifies segment visibility, eliminating "washout" from sunlight or overhead lighting. Critical for instrument panels where data accuracy directly impacts equipment performance or user safety.
Uniform Luminous Distribution: Segments emit consistent brightness with no hot spots or dim edges, ensuring digits and decimal points are clear and distortion-free—ideal for precision indicators like temperature/humidity controllers.
2. Industrial-Grade Durability & Energy Efficiency
Stable Performance in Variable Conditions: Withstands temperature fluctuations (-10°C to 60°C, typical for indoor industrial/residential use) and minor vibrations (from equipment operation or handling)—no flickering or segment failure during long-term 24/7 operation.
Low Power Consumption: 5–10mA per LED minimizes energy use, extending battery life for portable instruments and reducing operational costs for 24/7 industrial equipment.
Long Lifespan: High-quality LED chips and robust construction match the 8–10 year service life of most instrument panels and home appliances—eliminates frequent replacements and maintenance downtime.
3. Easy Integration & Manufacturing-Friendly Design
Common Cathode Polarity: Compatible with standard driver ICs and microcontrollers—simplifies circuit design for instrument manufacturers and integrates seamlessly with data sampling firmware.
Compact Profile: Engineered to fit dense PCB layouts of set-top boxes, home appliance controllers, and small instrument panels—no need for custom PCB redesigns, supporting automated production lines for high-volume manufacturing.
Multi-Color Versatility: Beyond the primary ultra bright white, optional colors enable functional differentiation for diverse applications:
Red: High-visibility for alarm/error values
Green: Normal/optimal status cues
Blue: Modern aesthetics for smart home appliance controllers
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.
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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 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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