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Super green 3 digit 0.56" 7 segment led display common cathode for instrument panel indicator
Product Overview
Introducing the Super Bright Yellow Green 0.56-Inch 3-Digit 7-Segment LED Display—a common cathode numeric solution engineered for home appliances, climate controllers, and precision indicators. Designed to balance eye-friendly visibility, energy efficiency, and seamless integration, this display excels at delivering clear, reliable readouts for daily-use metrics: AC temperature settings (e.g., "26°C"), fridge/freezer temps (e.g., "5°C"/"-18°C"), or room thermostat values (e.g., "22°C").
Its 14.2mm digit height ensures readability from 1–3 meters (typical kitchen/living room distances), while the slim 37.6×19×8mm form factor fits neatly into standard appliance control panels—no bulky redesigns required. The white segments on a black face create sharp contrast with super bright yellow green light (569-573nm), a hue known for reducing eye strain during prolonged viewing (ideal for bedroom ACs or frequently checked fridges).
With common cathode polarity, low power consumption (5-10mA/LED), and RoHS compliance, this display combines durability, user comfort, and eco-friendliness—perfect for 24/7 operation in home appliances and temperature-sensitive devices.
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Key Features (Appliance & Controller-Optimized)
1. Eye-Friendly Yellow Green Illumination
Gentle on Vision: Yellow green light (569-573nm wavelength) minimizes eye fatigue compared to harsher colors (e.g., red, blue)—critical for devices checked multiple times daily (e.g., fridge temps, bedroom AC settings).
Balanced Brightness (30-45mcd): Bright enough to cut through ambient glare (kitchen overhead lights, sunlight) without being overwhelming in dim rooms (e.g., night-time AC adjustments). Avoids "washout" or "glare" that obscures digits.
White Segments on Black Face: High contrast ensures every digit (0-9) and decimal point (for precision temps like "23.5°C") is crisp—no misreading values (e.g., confusing "6°C" with "0°C" in fridges) that could disrupt appliance function.
2. Compact & Energy-Efficient Design
Slim 37.6×19×8mm Dimensions: Optimized for space-constrained appliance panels—fits into AC remote controls, mini fridge panels, or slim thermostat enclosures without sacrificing readability.
Low Power Consumption:
Forward voltage: 1.8-2.2V per LED (compatible with standard 5V/12V appliance power supplies, no voltage converters needed).
Forward current: 5-10mA per LED (extremely low energy draw, extending battery life for portable controllers and reducing electricity use for plugged-in appliances).
Extremely Low Standby Current: Even when not updating values (e.g., AC in idle mode), the display uses minimal power—aligns with energy-efficient home appliance standards (e.g., ENERGY STAR).
3. Reliable Performance & Easy Integration
Stable Operation in Home Environments: Withstands temperature fluctuations (-10°C to 50°C, typical for kitchens, bedrooms, and utility rooms) and minor vibrations (fridge compressor cycles, AC fan movement). Maintains uniform segment brightness—no flickering during temp updates.
Big Viewing Angle: Wide horizontal/vertical viewing angles (≥120°) ensure readability from off-center positions (e.g., viewing the AC panel from the couch, checking the fridge while standing to the side).
Common Cathode Polarity: Works with standard driver ICs (e.g., TM1637, HT1621, MAX7219) widely used in home appliances—simplifies circuit design for manufacturers and supports seamless integration with existing firmware (temp sampling, timer functions).
Easy Assembly: PCB direct-mounting design supports automated production lines (high-volume appliance manufacturing) and reduces labor costs. No specialized tools required for installation.
4. Versatility & Compliance
Multi-Color Options: Beyond yellow green, available in red (for alerts), pure green (eco-aligned designs), pure white (modern aesthetics), blue, amber, and orange—flexible for functional cues (e.g., red for "high temp" warnings) or brand-specific appliance designs.
Good Consistency: Laboratory-tested to ensure <3% brightness variation across segments and between units—critical for mass-produced appliances (e.g., 1000+ fridges) where display uniformity reinforces brand trust.
RoHS Compliant: Free from lead, mercury, and harmful substances—safe for family-friendly home use and export to global markets (EU, North America, Asia).
| Category | Parameter | Specification (Appliance-Optimized) |
| Basic Design | Display Type | 3-Digit 7-Segment LED Display (supports decimal points for precision temps) |
| Polarity | Common Cathode | |
| Digit Height | 14.2mm (0.56 inches) | |
| Outer Dimensions (L×W×H) | 37.6 × 19 × 8mm | |
| Segment/Surface Finish | White segments on Black Face | |
| Optical Performance | Emitting Color | Primary: Super Bright Yellow Green; Optional: Red/pure green/pure white/blue/amber/orange |
| Wavelength (Yellow Green) | 569-573nm | |
| Luminous Intensity | 30-45 mcd | |
| Viewing Angle | Big (≥120° horizontal, ≥110° vertical) | |
| Electrical Parameters | Forward Voltage (VF) | 1.8-2.2V per LED (yellow green/red/amber/orange); 2.8-3.3V (blue/pure green/pure white) |
| Forward Current | 5-10mA per LED | |
| Power Consumption | Low (energy-efficient for 24/7 use) | |
| Quality & Compliance | Core Advantages | Stable performance, good consistency, IC compatible, easy assembly |
| Compliance | RoHS Compliant |
Applications
This display is tailored for home appliances and precision controllers, including:
Air Conditioner Controllers: Wall-mounted ACs (set temp "26°C"), portable ACs (cooling mode indicators), or smart AC remotes (room temp "24°C").
Refrigerator Controllers: Fridge/freezer temp displays (e.g., "5°C"/"-18°C"), defrost cycle indicators (e.g., "DEF"), or door-open alerts (e.g., "OPEN").
Temperature Controllers: Room thermostats (e.g., "22°C"), space heater monitors (e.g., "20°C"), or greenhouse temp regulators (e.g., "25°C").
Home Appliances: Microwaves (cook time "02:30"), coffee makers (brewing temp "95°C"), or humidifiers (humidity "55% RH").
Instrument Panels: Small utility monitors (e.g., water heater temp "60°C"), battery chargers (charge level "90%"), or fitness equipment (workout time "15min").
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Why Choose This Display for Home Appliances?
User Comfort: Yellow green light reduces eye strain—perfect for appliances used daily (fridges, ACs) or in dim rooms.
Appliance-Friendly Fit: Slim dimensions fit standard panels—no need to resize fridges, ACs, or thermostats.
Energy Savings: Low current use cuts electricity costs and extends battery life for portable controllers.
Easy Manufacturing: Common cathode polarity works with standard ICs, streamlining production for appliance brands.
Global Safety: RoHS compliance ensures use in international markets, aligning with consumer safety standards.
Order & Logistics Information
Minimum Order Quantity (MOQ): 300 pieces for standard yellow green models; 500 pieces for custom colors.
Packing: Anti-static EPE + carton (each display is individually wrapped to protect segments and pins during shipping).
Delivery Time: 5–7 days for standard orders; 10–12 days for custom color variants.
Transport: Express (FedEx/DHL for urgent samples), Air (medium-volume shipments), Ocean (bulk production runs for appliance manufacturers).
Contact Us
Our team specializes in LED displays for home electronics, providing 24-hour support to help you optimize your appliance's usability, reliability, and market appeal!
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