3-Digit 7-Segment LED Display, 0.67-Inch (17mm), Dual-Color (Ultra Bright Red/Pure Green), Common Cathode for Home

3-Digit 7-Segment LED Display, 0.67-Inch (17mm), Dual-Color (Ultra Bright Red/Pure Green), Common Cathode for Home Appliances

Product Overview

This 3-digit 7-segment LED display is engineered for clear, reliable numeric readouts in home electronic appliances—featuring a 0.67-inch (17mm) character height and compact outer dimensions (47×22×8mm) that balance visibility and space efficiency. Configured as common cathode for seamless integration into standard appliance circuits, it offers two high-performance primary color options:

Ultra Bright Red: 620-625nm wavelength, 80-100mcd intensity, 1.8-2.3V forward voltage (ideal for high-contrast alerts or warm-toned appliances).

Pure Green: 515-525nm wavelength, 120-140mcd intensity, 2.8-3.2V forward voltage (perfect for modern aesthetics or "normal status" indicators).

Both variants feature a yellow segments + black surface with protective film design—maximizing contrast to eliminate glare, while the film safeguards against scratches during assembly and use. With low power consumption (5-10mA/LED), long lifespan, and RoHS certification, it supports 5 additional emission colors (blue, white, amber, yellow, orange) and multi-color customization—making it a versatile solution for air conditioners, refrigerators, and heating/cooling controls.

Main Image

Key Specifications (Dual-Color Comparison)

Core Product Features

1. Dual-Color Versatility for Appliance Needs

Ultra Bright Red (620-625nm):

Warm, high-contrast emission cuts through kitchen/living room ambient light—ideal for air conditioner temperature alerts (e.g., "30°C" for overheating) or refrigerator door-open warnings.

Lower forward voltage (1.8-2.3V) minimizes energy usage, perfect for 24/7 operated appliances like refrigerators.

Pure Green (515-525nm):

Vibrant, modern glow suits "normal status" readouts—e.g., air conditioner set temperature ("24°C") or heating control "ON" mode.

Higher luminous intensity (120-140mcd) ensures visibility in dim spaces (e.g., basements with cooling units).

2. High Contrast & Durable Design

Yellow Segments + Black Surface: The bold contrast eliminates glare from overhead lights or sunlight, ensuring digits (0-9) remain sharp—critical for reading precise values like refrigerator temperature ("5°C") or heating timer settings ("02:30").

Protective Film: Shields the black surface from scratches during PCB assembly or appliance maintenance, preserving aesthetics and readability over time.

3. Efficient & Reliable Performance

Low Power Consumption: 5-10mA/LED forward current reduces energy draw, aligning with eco-friendly appliance standards (e.g., ENERGY STAR) and lowering long-term operational costs for users.

Stable Performance & Long Lifespan: Built with high-quality LED chips and durable epoxy to resist voltage fluctuations and environmental factors (e.g., humidity in kitchens, temperature changes in refrigerators). Ensures consistent brightness for 50,000+ hours.

IC Compatibility: Works seamlessly with standard display driver ICs (e.g., 74HC595, TM1638) common in home appliance circuits—eliminating the need for custom adapters and simplifying manufacturing.

4. Easy Integration & Compliance

Compact 47×22×8mm Profile: Fits into slim appliance control panels (e.g., wall-mounted air conditioners, under-counter refrigerators) without compromising character size.

RoHS Certification: Free from restricted substances, ensuring compliance with global regulations (EU CE, US FCC) for home electronics—no barriers to exporting to key markets.

Detail Image

Applications

Tailored for home electronic appliances requiring clear 3-digit numeric displays:

Air Conditioner Control: Showing set temperature (e.g., "26°C"), room temperature (e.g., "23°C"), or fan speed levels (e.g., "03").

Refrigerator Indicators/Control: Displaying internal temperature (e.g., "5°C" for fridge, "-18°C" for freezer) or door-open alerts (e.g., "OPEN").

Cooling/Heating Control: Showing thermostat settings (e.g., "22°C"), timer durations (e.g., "120" for 2 hours), or mode codes (e.g., "01" for cooling, "02" for heating).

Other Home Appliances: Microwaves (timers, e.g., "05:00"), electric heaters (power levels, e.g., "800W"), or dehumidifiers (humidity levels, e.g., "50%").

Application Scenario Image

Why Choose This 3-Digit LED Display?

This display stands out for its dual-color flexibility and appliance-focused design:

Ultra bright red/pure green options cater to both alert and normal-status use cases, while additional colors support brand customization.The yellow segments + black surface design ensures readability in any home environment, and the protective film adds durability.Low power consumption, IC compatibility, and RoHS compliance make it a cost-effective, globally viable solution for appliance manufacturers.

For brands building air conditioners, refrigerators, or heating controls—where visibility, reliability, and space efficiency matter—this 3-digit 7-segment display delivers consistent performance and user-centric value.

Shenzhen Guangzhibao (Light-Bo) Technology Co. Ltd is specialized in LED products, including LED 7 segment numeric displays, alphanumeric LED displays,dot-matrix LED Displays, SMD LEDs, LED lamps,LCD backlights,LED light bar, bar gragh arrays and LED direction indicator displays and more.
We offer top quality products at competitive prices to meet different requirement for industry applications. We introduced computerized operation system and complete QC system. Key raw materials are sourced from the US, Japan and Taiwan area, plus,we utilise an array of advanced production equipments from ASM and Risen,such as automatic dice bonding and wire soldering machines . We specialise in offering series of optoelectronic displays in pure green, pure white and ultra blue.All of our products comply with the RoHS Directives. Monthly capacity reaches 3,000,000pcs.
We have been in LED industry for more than 12 years. With more than 10 years OEM and ODM experience, our R&D engineers are at hand for your customization requirements. Samples can be ready in just 10-15 days. Contact us now !