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Customizd 4-Digit Common Cathode 7-Segment LED Display for Small Home Appliances
Product Overview
This customized 4-digit common cathode 7-segment LED display is a versatile numeric readout solution optimized for small home appliances, audio equipment, and industrial instrument panels. Engineered with industrial-standard 56×52×31.8mm dimensions, it fits seamlessly into standardized PCB layouts, eliminating the need for custom structural redesigns for manufacturers.
Featuring evenly distributed segment luminosity, high luminous intensity output, and extremely low current operation, it delivers clear, glare-free readouts even in bright ambient light-ideal for kitchen, living room, and workshop environments. With low power consumption, long service life, and dual RoHS/REACH compliance, it balances energy efficiency and reliability for 24/7 intermittent or continuous operation in diverse residential and industrial scenarios.
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Core Technical Specifications
| Category | Parameter | Specification (Small Home Appliance-Optimized) |
| Basic Design | Display Type | Customized 4-Digit Common Cathode 7-Segment LED Display |
| Industrial Standard Dimensions | 56 × 52 × 31.8mm | |
| Optical Performance | Core Optical Traits | High luminous intensity output, evenly distributed segment luminosity, excellent visibility in bright ambient light |
| Electrical Parameters | Key Traits | Low power consumption, extremely low current operation |
| Quality & Durability | Core Advantages | Stable performance, long lifetime (50,000+ hours), high reliability |
| Compliance | Certification | RoHS Compliant, REACH Compliant |
Key Features (Multi-Scenario Optimized)
1. Bright-Light Environment Readability for Home & Industrial Use
Evenly Distributed Segment Luminosity: ≤5% brightness variation across all segments eliminates dim or over-bright areas, ensuring crisp, uniform readouts of temperature values, humidity levels, and timer countdowns-critical for avoiding misreads in precision monitoring scenarios.
High Luminous Intensity Output: Cuts through glare from sunlight, kitchen overhead lights, and workshop fluorescent lamps, maintaining clear visibility for audio equipment volume displays, home appliance parameter panels, and industrial process indicators. No need to shield the display for readability in bright spaces.
2. Energy Efficiency for Low-Power Device Compatibility
Extremely Low Current Operation: Minimizes energy draw for battery-powered portable devices, extending battery life to 6-12 months on a single charge. For AC-powered home appliances, it reduces standby power consumption to meet global energy-saving standards.
Low Power Consumption: Balances high brightness with energy efficiency, avoiding excessive power drain that impacts the runtime of small, compact devices with limited power supplies.
3. Manufacturer-Friendly Standardization & Integration
Industrial Standard 56×52×31.8mm Dimensions: Matches universal PCB layout specifications for small home appliances and instrument panels, eliminating the need for custom housing or mounting bracket redesigns. Streamlines high-volume production and reduces R&D costs for manufacturers.
Common Cathode Polarity & IC Compatibility: Works seamlessly with mainstream driver ICs and microcontrollers. Simplifies circuit design for numeric display, decimal point control, and threshold alert functions.
Easy Assembly: Standardized through-hole or SMT pinout design supports automated production lines, reducing labor costs and assembly errors for mass-produced home appliances and industrial instruments.
4. Long-Term Reliability & Global Compliance
Stable Performance in Variable Environments: Withstands temperature fluctuations and minor vibrations from device operation, ensuring no flickering or segment failure in residential kitchens, living rooms, or industrial workshops.
50,000+ Hour Long Lifetime: High-quality LED chips and robust epoxy encapsulation match the 5-8 year service life of small home appliances and audio equipment, reducing maintenance costs and enhancing end-user brand trust.
Dual RoHS/REACH Compliance: Meets strict European and international environmental standards, enabling export to global markets without regulatory barriers.
Applications
This display is purpose-built for numeric readout scenarios across residential and light industrial fields:
Small Home Appliances: Smart thermostats, mini rice cookers, portable kitchen timers, air fryers, humidifiers/dehumidifiers.
Audio & Multimedia Equipment: Amplifier volume displays, mixer channel indicators, home theater receiver status panels.
Instrument Panels: Temperature/humidity indicators, process control meters, portable testing devices, security system numeric readouts.
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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