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Ultra white 3 digit 0.56" 7 segment led display Common cathode for digital temperature indicator
Product Overview
Introducing the Ultra Bright White 0.56-Inch 3-Digit 7-Segment Common Cathode LED Display—a temperature-focused numeric solution engineered for digital temperature indicators, air conditioner controllers, and home appliance panels. Designed to prioritize clarity, energy efficiency, and reliable temperature readouts, this display excels at showing critical climate data: AC set temperatures, fridge/freezer temps or room thermostat values.
Its 14.2mm (0.56-inch) digit height ensures exceptional readability from 1–3 meters (typical kitchen/living room distances), while the slim 37.6×19mm form factor fits seamlessly into standard temperature controller panels—no bulky redesigns required. The yellow segments on a grey surface create unique, eye-friendly contrast with ultra bright white light (100-120mcd), avoiding harsh glare in dim rooms (e.g., bedrooms) and resisting washout in bright spaces (e.g., sunlit kitchens).
With common cathode polarity, low power consumption (5-10mA/LED), and RoHS compliance, this display balances durability, user comfort, and eco-friendliness—ideal for 24/7 operation in temperature-sensitive devices.
Product Image
Key Features (Temperature Indicator-Optimized)
1. Superior Visibility for Temperature Readouts
Ultra Bright White Illumination (100-120mcd): High luminous intensity ensures temperature values stay clear in all lighting conditions—bright enough to cut through sunlight and soft enough for nighttime use. The neutral white light avoids color distortion, making decimal points and negative signs easy to distinguish.
Yellow Segments on Grey Surface: The yellow segment base paired with a grey background creates a milder, more natural contrast than traditional black surfaces—reduces eye strain during frequent temperature checks while still ensuring digits (0-9) stand out sharply.
Big Viewing Angle: Wide horizontal/vertical viewing angles (≥120°) ensure readability from off-center positions—perfect for shared spaces or tall fridge panels viewed from seated/standing heights.
2. Energy Efficiency for 24/7 Use
Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes energy use for temperature controllers that run 24/7. For example, an AC controller using this display consumes ~0.05kWh per year—negligible compared to overall AC energy usage, while extending battery life for portable temperature monitors.
Optimized Forward Voltage (2.8-3.2V/LED): Compatible with standard 5V/12V power supplies used in AC, fridge, and thermostat controllers—no need for custom voltage converters. Seamlessly integrates with existing controller circuits, reducing manufacturing complexity.
Extremely Low Standby Current: Even when not actively updating temperatures (e.g., AC in idle mode), the display draws minimal power—critical for energy-efficient home appliances and battery-powered devices.
3. Reliable Performance & Easy Integration
Stable Operation in Temperature Fluctuations: Operates seamlessly in -10°C to 60°C —from cold winter basements to hot summer attics (AC use). Maintains consistent brightness and segment uniformity, no flickering during temperature updates.
Good Consistency: Laboratory-tested to ensure<3% brightness variation across segments and between units—critical for mass-produced temperature controllers where display consistency reinforces brand trust.
Common Cathode Polarity: Works with standard driver ICs widely used in temperature indicators—simplifies circuit design for manufacturers and supports seamless integration with existing firmware.
Easy Assembly: Designed for PCB direct-mounting, compatible with automated production lines—speeds up manufacturing for high-volume temperature controllers and reduces labor costs.
4. Versatility & Compliance
Multi-Color Options: Beyond ultra bright white, available in 6 other high-performance colors to match functional needs or brand aesthetics:
Red: Alerts
Yellow Green/Pure Green: Signals "energy-saving mode"
Blue: Modern aesthetic for premium controllers.
Amber/Orange: Warm tone for heating systems
RoHS Compliant: Free from lead, mercury, and harmful substances—safe for family-friendly home use and export to global markets, meeting consumer safety standards for temperature-sensitive appliances.
Technical Specifications
| Category | Parameter | Specification |
| Basic Design | Display Type | 3-Digit 7-Segment LED Display (supports decimal points/negative signs for temps) |
| Polarity | Common Cathode | |
| Digit Height | 14.2mm (0.56 inches) | |
| Outer Dimensions (L×W) | 37.6 × 19mm | |
| Segment/Surface Finish | Yellow segments on Grey Surface | |
| Optical Performance | Emitting Color | Primary: Ultra Bright White; Optional: Red/yellow green/pure green/blue/amber/orange |
| Luminous Intensity | 100-120 mcd | |
| Color Coordinate (X/Y) | 0.29-0.31 | |
| Viewing Angle | Big | |
| Electrical Parameters | Forward Voltage (VF) | 2.8-3.2V per LED (white); 1.8-2.2V ; 2.8-3.2V |
| Forward Current | 5-10mA per LED | |
| Power Consumption | Low | |
| Quality & Compliance | Core Advantages | High brightness, stable performance, good consistency, IC compatible |
| Compliance | RoHS Compliant |
Applications
This display is purpose-built for temperature indicators and climate control devices, including:
Air Conditioner Controllers: Wall-mounted ACs , portable ACs (cooling mode temps), or smart AC remotes.
Temperature Controllers: Room thermostats, fridge/freezer monitors or greenhouse climate regulators
Refrigerator Controllers: Mini fridges , commercial display case or chest freezers
Home Appliances: Smart water heaters, electric fireplaces or space heaters
Why Choose This Display for Temperature Indicators?
Temperature Readout Precision: Big digit height + clear decimal/negative sign support ensure accurate readings—avoids mistakes that waste energy.
Eye-Friendly Design: Yellow segments on grey surface reduce strain during frequent checks, making it ideal for daily-use devices like ACs and thermostats.
Energy Efficiency: Low 5-10mA current cuts power use for 24/7 controllers, aligning with eco-friendly home appliance trends.
Easy Integration: Common cathode polarity + standard size fit existing temperature controller PCBs—saves manufacturers redesign time and cost.
Global Compliance: RoHS certification simplifies export to international markets, meeting safety standards for temperature-sensitive home electronics.
Order & Logistics Information
Minimum Order Quantity (MOQ): 300 pieces for standard ultra bright white models; 500 pieces for custom colors (red/blue/green, etc.).
Packing: Anti-static EPE + carton (each display is individually wrapped to protect yellow segments and the grey surface during shipping).
Delivery Time: 5–7 days for standard orders; 10–12 days for custom color variants.
Transport: Express, Air , Ocean
Contact Us
Our team specializes in LED displays for climate control systems, providing 24-hour support to help you optimize your temperature indicator's usability, reliability, and market appeal!
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 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 .
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