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Pure Green 0.31-Inch (8mm) 6-Digit Common Cathode 7-Segment LED Display for Instrument Panels
Product Overview
This 0.31-inch 6-digit common cathode 7-segment LED display is a high-precision readout solution optimized for instrument panels, home appliance control systems, and digital temperature/humidity indicators. Featuring vivid pure green illumination and a compact 40×12.5×6.25mm footprint, it excels at displaying multi-digit precision values in both industrial and residential environments.
The common cathode polarity ensures seamless compatibility with mainstream driver ICs, while its low power consumption, stable performance, and RoHS compliance make it ideal for 24/7 continuous operation. With multi-color emission options and easy assembly design, it caters to the high-volume manufacturing needs of instrument and home appliance suppliers.
Core Technical Specifications
| Category | Parameter | Specification (Instrument Panel-Optimized) |
| Basic Design | Display Type | 6-Digit 7-Segment LED Display |
| Digit Height | 8mm (0.31 inch) | |
| Outer Dimensions (L×W×H) | 40 × 12.5 × 6.25mm | |
| Polarity | Common Cathode | |
| Optical Performance | Primary Emitting Color | Pure Green |
| Wavelength Range | 515–525nm | |
| Luminous Intensity | 100–140 mcd/LED | |
| Optional Emitting Colors | Red, Blue, Yellow Green, Amber, Orange, Yellow, White | |
| Electrical Parameters | Forward Voltage (VF) | 2.8–3.2V/LED |
| Recommended Forward Current | 5–10mA/LED | |
| Power Traits | Low power consumption, extremely low current | |
| Quality & Compliance | Core Advantages | High luminous intensity & reliability, stable performance, continuous uniform segments, long lifetime, easy assembly, IC compatible |
| Certification | RoHS Directive-Compliant |
Key Features (Instrument Panel-Optimized)
1. High-Precision Multi-Digit Readability
Pure Green Eye-Friendly Illumination: The 515–525nm pure green light reduces eye fatigue during long-term monitoring of instrument data, making it ideal for 6-digit precision values like industrial process parameters or decimal temperature/humidity readings. Unlike harsh red light, it maintains clarity without straining the eyes in bright or dim environments.
Continuous Uniform Segments: ≤5% brightness variation across all segments eliminates digit distortion, critical for distinguishing subtle value changes in precision monitoring scenarios. No dim segments or "hot spots" that cause misreading of critical data.
Balanced 100–140mcd Brightness: Delivers clear visibility at viewing distances of 1–3 meters, perfect for both fixed instrument panels and handheld monitoring devices. Avoids excessive glare that hinders readability in close-range operation.
2. Energy Efficiency & Long-Term Reliability
Ultra-Low Current Operation (5–10mA/LED): Minimizes energy use for battery-powered portable instruments, extending battery life to 8–12 months on a single charge. For AC-powered devices, it reduces standby power draw to meet global energy-saving standards.
Long Lifetime: High-quality LED chips and robust epoxy encapsulation match the 10–15 year service life of industrial instruments and home appliances, eliminating frequent display replacements and reducing maintenance costs for manufacturers and end-users.
Stable Performance in Variable Environments: Withstands temperature fluctuations and minor vibrations from machinery operation, ensuring no flickering or segment failure in harsh industrial workshops or residential kitchen/basement settings.
3. Manufacturer-Friendly Integration & Cost Efficiency
Common Cathode IC Compatibility: Works seamlessly with standard driver ICs and microcontrollers widely used in instrument panels. Simplifies circuit design for multi-parameter display, threshold alerts, and unit switching.
Low Development Cost: Plug-and-play compatibility with mainstream ICs reduces R&D time and firmware development costs—no need for custom driver circuits for basic 6-digit display functions. Supports rapid product prototyping and mass production.
Easy Assembly: Standardized through-hole or SMT pinout design is compatible with automated SMT production lines, speeding up high-volume manufacturing of instruments and home appliances while reducing labor costs and assembly errors.
4. Multi-Color Versatility for Functional Coding
Optional emitting colors enable targeted use across diverse application scenarios:
Red: High-visibility for over-limit alarms
Blue: Modern aesthetics for premium smart home instrument panels
Amber: Warm tones for home appliance multi-digit timers
White: Neutral illumination for general-purpose industrial instrument readouts
Applications
This display is purpose-built for 6-digit high-precision numeric readout scenarios across industrial and residential fields:
Industrial Instrument Panels: Process control equipment, motor speed monitors, pressure gauges, precision temperature/humidity indicators, laboratory testing devices.
Home Appliances: Multi-function oven control panels, smart air conditioner parameter displays, water heater temperature and timer readouts, large-capacity refrigerator thermostats.
Portable Monitoring Devices: Handheld environmental detectors, professional temperature calibrators, battery capacity testers, industrial flow meters.
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.
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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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