Ultra bright white 0.28" 3 digit 7 segment led display common anode for instrument panel

Product Overview

Introducing the Ultra Bright White 0.28-Inch 3-Digit 7-Segment Common Anode LED Display—a miniaturized, high-performance numeric solution engineered for space-constrained devices: instrument panels, equipment testers, small home appliances, and temperature controllers. Designed to balance tiny size, clear visibility, and energy efficiency, this display excels at showing concise metrics: compact thermostat temps (e.g., "22°C"), equipment test readings (e.g., "120" for voltage), or small appliance statuses (e.g., "050" for humidity).

Its 7.00mm character height ensures readability from 0.5–1.5 meters (typical distance for handheld or small-mounted devices), while the slim 22.5×10×6.1mm form factor fits into dense PCB layouts or tiny appliance panels—no need to sacrifice functionality for size. The yellow segments on a black face boost contrast with ultra bright white light (100-120mcd), avoiding glare in dim spaces (e.g., equipment enclosures) and resisting washout in bright environments (e.g., workbenches).

With common anode polarity, low power consumption (5-10mA/LED), and RoHS compliance, this display combines durability, space efficiency, and eco-friendliness—ideal for 24/7 operation in compact electronic devices.

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Key Features (Compact Device-Optimized)

1. Ultra-Compact Design for Space-Limited Use

Miniature Dimensions (22.5×10×6.1mm): One of the slimmest 3-digit 7-segment displays available, fitting into dense instrument panels (e.g., multi-parameter testers with 3+ displays) or tiny home appliances (e.g., mini humidifiers, portable thermometers). No need to resize PCBs or redesign device enclosures.

7.00mm (0.28-Inch) Character Height: Balances small size with readability—large enough to distinguish digits (e.g., "0" vs. "8") for precision metrics (e.g., "025°C" for low temps) but small enough for handheld equipment (e.g., portable voltage testers).

Dual Mounting Options: Easy to mount on PC boards (for automated mass production) or sockets (for manual replacement/maintenance)—flexible for both high-volume devices and custom equipment builds.

2. Superior Visibility in Compact Scenarios

Ultra Bright White Illumination (100-120mcd): High luminous intensity ensures clarity in challenging lighting—bright enough for well-lit workbenches (equipment testing) and visible in dim enclosures (e.g., inside industrial machines). The neutral white light (X/Y: 0.29-0.31) avoids color distortion, making decimal points (e.g., "24.5°C") sharp.

Yellow Segments on Black Face: The yellow segment base enhances contrast with the black background, eliminating "fuzzy" edges on small digits—critical for accurate reading of fine values (e.g., "015" for 15mV in equipment tests) that could impact device performance.

Continuous Uniform Segments: No "dead spots" or uneven brightness across segments—laboratory-tested to ensure <2% intensity variation, so every bar of digits (e.g., the middle bar of "5") is consistent, avoiding misinterpretation.

3. Energy Efficiency & Reliable Performance

Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes energy use, ideal for battery-powered compact devices (e.g., portable temperature sensors) — extends battery life by 30% compared to higher-current displays, reducing user hassle of frequent charging.

Stable Operation in Variable Environments: Withstands temperature fluctuations (-10°C to 50°C, typical for equipment enclosures or home use) and minor vibrations (e.g., handheld tester movement, appliance operation)—maintains consistent brightness, no flickering during value updates.

Long Lifespan (50,000+ Hours): High-quality white LED chips match the 5–8 year service life of most compact devices (e.g., mini thermostats, equipment testers), reducing maintenance downtime and replacement costs.

4. Versatility & Compliance

Multi-Color Options: Beyond ultra bright white, available in red (for alerts), blue (modern aesthetics), yellow green (eco-aligned designs), pure green, amber, and orange—flexible for functional cues (e.g., red for "error" in equipment tests, green for "normal" status) or brand-specific device designs.

Common Anode Polarity: Compatible with standard driver ICs (e.g., TM1637, HT1621, MAX7219) widely used in compact devices—simplifies circuit design, no need for custom polarity adapters, and supports seamless integration with existing firmware (e.g., temperature sampling, test data processing).

RoHS Compliant: Free from lead, mercury, and harmful substances—safe for consumer devices (e.g., home mini-appliances) and industrial equipment (e.g., factory testers), meeting global safety standards for export to EU, North America, and Asia.

Technical Specifications

Applications

This display is tailored for space-constrained electronic devices, including:

Instrument Panels: Compact industrial testers (voltage: "120V", current: "0.5A"), medical devices (e.g., "098" for pulse), or automotive dash accessories (e.g., "13.8V" for battery).

Equipment Test Devices: Handheld multimeters (e.g., "220" for resistance), power supply monitors (e.g., "5.0V"), or sensor calibrators (e.g., "015" for offset).

Small Home Appliances: Mini humidifiers (e.g., "050" for 50% RH), portable air purifiers (e.g., "03" for fan speed), or travel-sized thermometers (e.g., "25°C").

Temperature Controllers: Compact HVAC panels (e.g., "21°C" for room temp), fridge mini-monitors (e.g., "05°C"), or incubator controllers (e.g., "37°C").

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Why Choose This Display for Compact Devices?

Space Efficiency: Ultra-small dimensions fit into dense PCBs or tiny enclosures—enables multi-display setups (e.g., 2–3 displays in one tester) without sacrificing functionality.

Precision Readability: Yellow segments on black face + uniform brightness ensure accurate digit recognition for fine metrics (e.g., "005V" in equipment tests) that can't be misread.

Battery-Friendly: Low current use extends life for portable devices—critical for users relying on handheld testers or travel appliances.

Easy Integration: Common anode polarity + dual mounting options simplify production and maintenance—works with standard ICs and PCBs.

Global Compliance: RoHS certification ensures use in international markets, aligning with safety standards for consumer and industrial compact devices.