Low Current Ultra Bright Blue Common Anode 0.4" 4-Digit 7-Segment LED Display for Temperature Indicators

Product Overview

Introducing the Low Current Ultra Bright Blue Common Anode 0.4" 4-Digit 7-Segment LED Display—a high-efficiency, low-power numeric solution engineered specifically for temperature indicators, humidity monitors, and compact electronics. Designed to prioritize energy savings without compromising visibility, this display features an extremely low current draw, ultra bright blue illumination (460-465nm wavelength), and a 0.4" (10.16mm) character height for clear readability of temperature values (e.g., "25.5°C," "-10°C").

With a slim 40.5×16×7mm form factor, white diffused epoxy black surface (reduces glare), and common anode configuration, it fits seamlessly into space-constrained devices like portable thermometers or home appliance control panels. Its RoHS compliance, long lifespan, and compatibility with standard driver ICs make it a reliable choice for both consumer and industrial temperature-sensing applications. Multiple emitting color options further extend its versatility for diverse design needs.

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Key Features

1. Temperature Indicator-Optimized Efficiency

Extremely Low Current & Low Power Consumption: Engineered for minimal energy use (recommended forward current: 10-15mA/LED), ideal for battery-powered temperature indicators (e.g., handheld thermometers) or devices requiring long-term, low-drain operation.

0.4" (10.16mm) Character Height: Balances readability (for precise temperature values like "37.8°C") and compactness—fits into small thermometer enclosures without sacrificing clarity.

4-Digit Layout: Supports both positive and negative temperature ranges (e.g., "-20.0°C" for freezers, "50.5°C" for industrial sensors) and decimal points, eliminating the need for additional displays.

2. Superior Visibility & Glare Reduction

Ultra Bright Blue Illumination: 100-120mcd luminous intensity and 460-465nm wavelength cut through ambient light (e.g., office lighting, outdoor shade), ensuring temperature readings are visible at a glance—critical for real-time monitoring.

White Diffused Epoxy Black Surface: Diffuses light evenly across segments (no "hot spots") and reduces glare from direct light, making the display readable in bright environments without eye strain.

Even Segment Luminance: Consistent light distribution across all 7 segments of each digit ensures decimal points and negative signs (for sub-zero temps) are as clear as numeric values.

3. Easy Integration & Reliability

Common Anode Configuration: Works seamlessly with standard driver ICs (e.g., TM1637, MAX7219) commonly used in temperature indicator circuits, simplifying circuit design for engineers.

Slim 40.5×16×7mm Size: Fits into tight spaces in portable devices, home appliance control panels (e.g., mini humidifiers), or set-top box status displays—no need for bulky enclosures.

Long Lifespan: High-quality LED chips and robust encapsulation ensure a typical lifespan of 50,000+ hours, reducing maintenance and replacement needs for long-term temperature monitoring systems.

4. Flexibility & Compliance

Multi-Color Options: Beyond ultra bright blue, choose from red, amber, orange, white, or green to match device aesthetics or functional needs (e.g., red for high-temperature alerts, green for "normal" ranges).

RoHS Compliant: Meets international environmental and safety standards, ensuring compatibility with global markets (Europe, North America, Asia, etc.)—no regulatory barriers for export.

Stable Performance: Resists voltage fluctuations and temperature variations (typical operating range: -20°C to 60°C), maintaining consistent brightness in diverse monitoring environments.

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Technical Specifications

Applications

This low-current 4-digit LED display is widely suitable for:

Temperature Indicators: Portable thermometers, HVAC controllers, refrigerator/freezer monitors, and industrial temperature sensors (for displaying °C/°F values).

Humidity Indicators: Dehumidifiers, humidifiers, and weather stations (for showing humidity percentages, e.g., "65% RH").

Home Appliances: Mini ovens, air fryers, and smart kettles (for temperature settings or timer values).

Set-Top Boxes: Status displays for channel numbers, signal strength, or playback time.

Instrument Panels: Compact industrial meters, test equipment, or automotive auxiliary displays (for voltage, pressure, or temperature data).

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Why Choose This Display for Temperature Indicators?

Low Current for Battery Life: Extremely low current draw extends battery life for portable temperature indicators—critical for devices used in fieldwork or remote monitoring.

Temperature Range Readability: 4-digit layout supports negative values and decimals, eliminating the need for multiple displays to monitor full temperature spectrums.

Glare-Free Visibility: White diffused surface ensures readings are clear in bright environments, avoiding misreads of critical temperature data.

Space-Efficient: Slim 40.5×16×7mm size fits into small thermometer enclosures, making it ideal for portable or wearable temperature-sensing devices.

Global Compliance: RoHS certification ensures adherence to international standards, simplifying export to global temperature indicator markets.