Common Cathode Ultra Bright Blue 0.56-Inch 3-Digit 7-Segment LED
Display for Home Appliances & Digital Indicators
Product Overview
Introducing the Common Cathode Ultra Bright Blue 0.56-Inch 3-Digit
7-Segment LED Display—a versatile, industry-standard numeric
solution engineered for digital indicators, home appliances, and
multimedia products. Designed to prioritize visibility, energy
efficiency, and reliability, this 3-digit display excels at showing
extended metrics that require precision: temperature (e.g.,
“24.0°C” for thermostats), humidity (e.g., “55% RH” for
humidifiers), audio volume (e.g., “80” for speakers), or process
values (e.g., “180” for industrial timers).
Its 0.56-inch digit height ensures readability from 1–3 meters
(typical kitchen/living room or equipment operation distances),
while the common cathode polarity simplifies integration with
standard driver ICs. The ultra bright blue light (460-465nm
wavelength) cuts through bright ambient light (e.g., sunlight,
fluorescent kitchen lights) without causing eye strain, making it
ideal for both home and commercial use. With low power consumption
(5-10mA/LED), RoHS/REACH compliance, and a long lifespan, it
balances functionality, eco-friendliness, and durability—perfect
for 24/7 operation in diverse devices.
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: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 |
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Key Features (Indicator & Appliance-Optimized)
1. Superior Visibility in Bright Environments
Ultra Bright Blue Illumination (460-465nm): Blue light delivers high contrast against dark surfaces (e.g.,
black appliance panels) and resists washout in bright ambient
light—critical for outdoor-facing humidity indicators, sunlit
kitchen appliances, or audio equipment in well-lit rooms.
Even Light Distribution: Segments are uniformly lit (no “hot spots” or dim areas), ensuring
every digit (e.g., “0” to “9”) and decimal point (for precision
metrics like “25.5°C”) is clear—avoids misreading values that could
disrupt temperature/humidity control or audio settings.
0.56-Inch Digit Height: Balances readability and space efficiency—large enough to
distinguish small increments (e.g., “50%” vs. “51%” humidity) but
compact enough to fit into slim appliance panels (e.g., mini
temperature controllers) or audio equipment front panels.
2. Energy Efficiency & Industrial-Grade Reliability
Extremely Low Current (5-10mA/LED): Minimizes power draw, making it ideal for battery-powered devices
(e.g., portable temperature sensors) or energy-efficient home
appliances (e.g., ENERGY STAR-certified ACs)—extends battery life
by 30% compared to higher-current displays.
Low Forward Voltage (2.8-3.2V/LED): Compatible with standard low-voltage power supplies (e.g., 5V USB,
12V DC adapters) used in most home and multimedia devices—no need
for bulky voltage converters or custom wiring.
Industrial Standard Size: Follows industry benchmarks for 0.56-inch 3-digit displays,
ensuring drop-in compatibility with existing PCB layouts (e.g., for
upgrading old red displays to blue in audio equipment or
appliances) — reduces redesign costs for manufacturers.
3. Stable Performance & Easy Integration
Reliable Operation in Variable Conditions: Withstands temperature fluctuations (0°C–50°C, typical for homes,
offices, or light industrial spaces) and minor vibrations (e.g.,
audio equipment bass, appliance fan movement)—maintains consistent
brightness and segment uniformity, no flickering during value
updates.
Long Lifetime (50,000+ Hours): High-quality LED chips match the 8–10 year service life of most
home appliances and audio equipment, reducing maintenance and
replacement costs (critical for commercial devices like process
indicators used 24/7).
Common Cathode Polarity: Works with standard driver ICs (e.g., TM1637, HT1621, MAX7219)
widely used in digital indicators and appliances—simplifies circuit
design, accelerates production, and ensures compatibility with
existing firmware (e.g., temperature sampling, humidity sensing).
4. Compliance & Versatility
RoHS/REACH Compliant: Free from harmful substances (lead, mercury, phthalates) and meets
strict European chemical safety standards—safe for home use and
export to global markets (EU, North America, Asia).
Multi-Color Options: Beyond ultra bright blue, choose from red (for alerts), green (for
“normal” status), white (for premium designs), amber, orange, or
yellow—flexible for functional cues (e.g., red for “high temp”
warnings, blue for standard readings) or brand aesthetics (e.g.,
blue for modern audio equipment).
| Category | Parameter | Specification (Indicator/Appliance-Optimized) |
|---|
| Basic Design | Display Type | 3-Digit 7-Segment LED Display (supports decimal points for
precision metrics) |
| Polarity | Common Cathode |
| Digit Height | 0.56 inches |
| Segment/Surface Finish | White segments on black surface (industrial standard) |
| Optical Performance | Emitting Color | Primary: Ultra Bright Blue; Optional:
Red/green/white/amber/orange/yellow |
| Wavelength (Blue) | 460-465nm |
| Electrical Parameters | Forward Voltage (VF) | 2.8-3.2V per LED |
| Recommended Forward Current | 5-10mA per LED |
| Power Consumption | Low (energy-efficient for continuous use) |
| Quality & Compliance | Core Advantages | Even light distribution, bright ambient light reliability, stable
performance, long lifespan |
| Compliance | RoHS Compliant, REACH Compliant |
Applications
This 3-digit display is tailored for diverse digital indicators and
devices, including:
Home Electronic Appliances: AC thermostats (e.g., “24.0°C”), refrigerators (e.g.,
“5°C”/“-18°C”), humidifiers (e.g., “55% RH”), or microwaves (e.g.,
“02:30” timer).
Audio Equipment & Multimedia: Speaker amplifiers (volume levels like “80”), AV receivers
(channel numbers like “03”), or portable Bluetooth speakers
(battery percentage like “90”).
Digital Indicators: Temperature indicators (e.g., “30.5°C” for greenhouses), humidity
indicators (e.g., “45% RH” for offices), or process indicators
(e.g., “120” for production line timers).
Instrument Panels: Industrial voltage monitors (e.g., “12.0V”), pressure gauges
(e.g., “50 PSI”), or fitness equipment (e.g., “180” for workout
calories).
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Why Choose This Display for Indicators & Appliances?
Bright Environment Reliability: Ultra bright blue light ensures readability in sunlight or harsh
lighting—no more squinting at temperature/humidity values.
Energy & Cost Efficiency: Low current use cuts electricity costs and extends battery life;
industrial standard size reduces redesign expenses.
Versatile Compatibility: Common cathode polarity works with most driver ICs, making it easy
to upgrade or integrate into existing devices.
Global Safety Compliance: RoHS/REACH certification ensures use in international markets,
aligning with strict consumer and industrial safety standards.
Precision Readability: 3-digit layout + decimal point support handles detailed metrics
(e.g., “25.5°C”), critical for temperature/humidity control.
Order & Logistics Information
Minimum Order Quantity (MOQ): 300 pieces for standard ultra bright blue models; 500 pieces for
custom colors/configurations.
Packing: Anti-static EPE (Expandable Polyethylene) + carton (each display
is individually wrapped to protect segments and pins during
shipping).
Delivery Time: 5–7 days for standard models; 10–12 days for custom colors or
configurations.
Transport: Express (FedEx/DHL for urgent prototype orders), Air
(medium-volume shipments), Ocean (bulk production runs for
appliance/equipment manufacturers).
Contact Us
Our team specializes in LED displays for precision indicators and
home/commercial devices, providing 24-hour support to help you
optimize your product’s usability, visibility, and market
compatibility!
