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Ultra bright white 7 Segment LED Display 3 Digit 10mm common cathode for small home appliances
Product Description
This 10mm (0.39-inch) 3-digit common cathode 7-segment LED display is a home appliance-optimized solution engineered for small household devices requiring concise numeric readouts—including air conditioner controllers, washing machine timers, temperature regulators, and digital indicators. Designed with a high-contrast yellow segment on white surface layout and ultra bright white light output, it delivers crisp, eye-friendly visibility at typical home viewing distances (0.5–2 meters).
Its compact 30.02×12.8×7mm dimensions fit seamlessly into narrow appliance control panels, while the common cathode polarity ensures compatibility with mainstream driver ICs (e.g., TM1637, HT1621, MAX7219). With low power consumption, stable performance, and RoHS compliance, this display is ideal for 24/7 standby operation in home appliances, balancing energy efficiency and long-term reliability.
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Core Technical Specifications
| Category | Parameter | Specification (Home Appliance-Optimized) |
| Basic Design | Display Type | 3-Digit 7-Segment LED Display |
| Outer Dimensions (L×W×H) | 30.02 × 12.8 × 7mm | |
| Character Height | 10mm (0.39-inch) | |
| Segment/Surface Finish | Yellow Segments on White Surface | |
| Polarity | Common Cathode | |
| Optical Performance | Primary Emitting Color | Ultra Bright White |
| X/Y Ratio | X: 0.29–0.33; Y: 0.29–0.31 | |
| Luminous Intensity (IV) | 80–100 mcd | |
| Optional Emitting Colors | Red, Yellow Green, Pure Green, Pure White, Blue, Amber, Orange | |
| Electrical Parameters | Forward Voltage (VF) | 2.8–3.2V per LED (white/blue/green) |
| Forward Current | 5–10mA per LED | |
| Power Traits | High luminous intensity, low power consumption, extremely low current | |
| Quality & Compliance | Core Advantages | Stable performance, big viewing angle, continuous uniform segments, long lifespan, IC compatible, easy assembly |
| Compliance | RoHS Compliant |
Key Features (Small Home Appliance-Optimized)
1. Home-Centric High Visibility
Yellow Segments + White Surface Contrast: The color combination amplifies the readability of ultra bright white light, eliminating glare from home ambient lighting and ensuring clear recognition of timer/temp values—even for users with mild visual impairment.
Big Viewing Angle: Wide horizontal/vertical viewing angles enable readability from any position in the room without bending close to the panel.
Continuous Uniform Segments: No brightness variation across segments prevents digit distortion and ensures consistent readability of critical values like "0°C" or "60min".
2. Energy Efficiency & Long-Lasting Reliability
Low Power Consumption & Extremely Low Current: 5–10mA per LED minimizes energy use for appliances in standby mode and extends battery life for portable devices, aligning with home energy-saving trends.
Long Lifespan: High-quality LED chips match the 8–10 year service life of most small home appliances, eliminating frequent display replacements and reducing maintenance hassle for users.
Stable Performance in Home Environments: Withstands temperature fluctuations and minor vibrations, no flickering or segment failure during long-term use.
3. Manufacturer-Friendly Easy Integration
Common Cathode IC Compatibility: Works seamlessly with standard home appliance driver ICs and microcontrollers, simplifying circuit design for timer countdowns, temp monitoring, and status display functions.
Compact Industrial Standard Size: The 30.02×12.8×7mm slim profile fits into narrow PCB layouts of small appliances without requiring custom redesigns.
Automated Assembly Support: Standardized pinout and PCB direct-mount design support SMT production lines, speeding up high-volume manufacturing of home appliances.
4. Multi-Color Versatility for Brand Differentiation
Optional emitting colors enable targeted design for different home appliances:
Red: High-visibility for error alerts or high-temp warnings
Pure Green: Normal status cues
Amber: Warm tones for kitchen appliance timers
Blue: Modern aesthetics for smart home devices
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 .
Light Bo 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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