Welcome to Shenzhen Guangzhibao Technology Co., Ltd!
You are here: 
0.56-Inch (14.2mm) 3-Digit Common Cathode 7-Segment LED Display for Temperature Indicators
Product Overview
This 0.56-inch (14.2mm) 3-digit common cathode 7-segment LED display from Light-Bo is a temperature indicator-optimized solution, engineered for clear, reliable readouts of ambient, refrigeration, and heating temperatures. Featuring super bright red light and a high-contrast white-segment-on-black/gray-face design, it excels at displaying 3-digit temperature values with flexible decimal point integration.
With its 37.6×19×8mm compact industrial size, it fits seamlessly into dense PCB layouts of air conditioner controllers, refrigerator thermostats, and home appliance temperature panels. The common cathode polarity ensures compatibility with mainstream driver ICs, while high efficiency, low power consumption, and RoHS compliance make it ideal for 24/7 stable operation in residential and commercial temperature control systems. Backed by a 20,000 pcs/day production capacity and 1000-piece MOQ, it meets the high-volume manufacturing needs of home appliance and instrument suppliers.
Core Technical Specifications
| Category | Parameter | Specification (Temperature Indicator-Optimized) |
| Basic Design | Brand Name | Light-Bo |
| Type | Standard | |
| Display Type | 3-Digit 7-Segment LED Display | |
| Digit Height | 14.2mm (0.56 inch) | |
| Outer Dimensions (L×W×H) | 37.6 × 19 × 8mm | |
| Surface/Segment Finish | White Segments on Black/Gray Face | |
| Polarity | Common Cathode | |
| Optical Performance | Primary Emitting Color | Super Bright Red |
| Wavelength | 569-574nm | |
| Luminous Intensity | 25-35 mcd/LED | |
| Optional Emitting Colors | Various colors available (customizable per order) | |
| Electrical Parameters | Forward Voltage (VF) | 1.8-2.5V/LED |
| Recommended Forward Current | 12-15mA/LED | |
| Power Traits | High efficiency, low power consumption, extremely low current | |
| Quality & Compliance | Core Advantages | Uniform segment brightness, stable performance, easy assembly, IC compatible |
| Compliance | RoHS Compliant | |
| Order & Logistics | Minimum Order Quantity (MOQ) | 1000 Pieces |
| Trade Term | EXW | |
| Payment Terms | T/T, WU | |
| Place of Origin | Guangdong, China (Mainland) | |
| Production Capacity | 20,000 pcs/day | |
| Packing | EPE + Carton (anti-static, shockproof transit protection) | |
| Delivery Time | 10-15 days | |
| Transport Options | Ocean, Air, Land |
Key Features (Temperature Indicator-Optimized)
1. Temperature-Centric High-Contrast Visibility
Super Bright red Illumination: The 569-574nm light is eye-friendly and highly distinguishable in both bright indoor environments (living rooms, offices) and dim spaces. Perfect for displaying critical temperature thresholds.
White Segments + Black/Gray Face Contrast: Eliminates ambient light glare and ensures 3-digit temperature values are crisp and easy to read-even for users with mild visual impairment. No "washout" issues that plague low-contrast displays in sunlight or kitchen lighting.
Uniform Segment Luminance: Segments emit consistent brightness with no hot spots or dim edges, preventing misinterpretation of decimal temperature values in precision temperature control applications.
2. Energy Efficiency & Stable Performance
Low Power Consumption & Extremely Low Current: 12-15mA recommended forward current minimizes energy use for temperature controllers running 24/7, reducing household and commercial operational costs.
Stable Operation in Variable Temperatures: Withstands the ambient temperature fluctuations of its target applications and minor vibrations from appliance operation. No flickering or segment failure during long-term use.
Long Lifetime (50,000+ Hours): High-quality LED chips and robust epoxy construction match the 8-10 year service life of most home appliances and temperature controllers, eliminating frequent display replacements and maintenance downtime.
3. Manufacturer-Friendly Easy Integration
Common Cathode IC Compatibility: Works seamlessly with standard temperature controller driver ICs and microcontrollers. Simplifies circuit design for real-time temperature sampling, threshold alerts, and decimal point display functions.
Compact Industrial Size: The 37.6×19×8mm profile fits into narrow PCB layouts of air conditioner remote controls, refrigerator control panels, and portable temperature indicators-no custom PCB redesign required. Supports automated SMT production lines for high-volume manufacturing.
High Production Capacity: 20,000 pcs/day output ensures timely delivery for large-scale home appliance projects, while EXW trade terms offer flexible logistics options for global customers.
4. Multi-Color Versatility for Functional Differentiation
Optional emitting colors enable targeted use across diverse temperature control scenarios:
Red: High-visibility for over-temperature alarms
Amber: Warm tones for heating system temperature displays
Blue: Modern aesthetics for premium smart home temperature controllers
Product Image
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.
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 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 .
(0)
Lucy