Ultra Bright White 7mm (0.28-Inch) 4-Digit 7-Segment Common Anode LED Display

Product Specification

Ultra Bright White 7mm (0.28-Inch) 4-Digit 7-Segment Common Anode LED Display for Digital Timers

Product Overview
Introducing the Ultra Bright White 7mm 4-Digit 7-Segment Common Anode LED Display—a space-saving, high-visibility solution engineered for digital timers, LED clocks, and compact home appliances. Designed to prioritize miniaturization, clear time readouts, and energy efficiency, this 4-digit display excels at showing time-based metrics: countdown timers (e.g., “05:00” for cooking), clock time (e.g., “23:45”), or process durations (e.g., “1800” for 1800 seconds).
Its 7mm (0.28-inch) character height balances readability (clear from 0.3–1 meter, typical for desktop timers or wall clocks) and compactness, while the 32.1×10×5.8mm form factor fits into slim devices—from portable timers to smart clock displays. The yellow epoxy black surface enhances contrast with ultra bright white light, cutting through bright ambient light (e.g., sunlight, room lamps) without eye strain.
With common anode polarity, low power consumption, and RoHS/REACH compliance, this display combines durability, eco-friendliness, and performance—ideal for 24/7 operation in digital timers and daily-use timekeeping devices.

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Key Features (Digital Timer & Clock-Optimized)
1. Ultra-Compact Design for Timekeeping Devices
Slim 32.1×10×5.8mm Dimensions: Among the smallest 4-digit 7-segment displays, fitting into portable digital timers (e.g., pocket-sized kitchen timers), slim LED clocks, or home appliance control panels (e.g., microwave timer sections). No need to enlarge device enclosures for multi-digit time readouts.
7mm (0.28-Inch) Character Height: Balances miniaturization with readability—large enough to distinguish time symbols (e.g., colon for “01:30”) and digits (0-9) at a glance, but small enough for space-constrained devices (e.g., smartwatch companions).
Industrial Standard Size: Follows global 0.28-inch 4-digit display footprints, enabling drop-in replacement for outdated timers/clocks (e.g., upgrading old red displays to white) without modifying PCBs—saves manufacturing time and cost.
2. Superior Visibility for Time Readouts
Ultra Bright White Illumination: High luminous intensity ensures time is clear in bright environments (e.g., sunlit kitchens for cooking timers, office desks for clock displays) — avoids “washout” that makes “12:00” look like “10:00”.
Yellow Epoxy Black Surface: The yellow epoxy base under the black surface softens harsh white light (reducing eye fatigue during prolonged viewing, e.g., bedroom clocks) while boosting contrast between segments and background—ensures colon separators (for time) and digits stay sharp.
Even Segment Lighting: Luminous intensity is uniformly distributed across all segments (no “hot spots” or dim edges) — guarantees consistent readability of time details (e.g., the top bar of “9”, the middle bar of “8”) that are critical for accurate timekeeping.
3. Energy Efficiency & Reliable Performance
Low Power Consumption (Extremely Low Current): Minimizes energy draw (typical 5-10mA/LED), extending battery life for portable timers (e.g., 200+ hours of use on AA batteries) and reducing electricity use for plugged-in clocks (e.g., wall-mounted time displays).
Stable Operation in Daily Environments: Withstands temperature fluctuations (-10°C to 50°C, typical for homes/offices) and minor vibrations (e.g., moving a portable timer, dusting a clock) — maintains consistent brightness, no flickering during time updates (e.g., minute/second changes).
Long Lifespan (50,000+ Hours): High-quality white LED chips match the 5–8 year service life of most timers/clocks—eliminates frequent display replacements (critical for 24/7 wall clocks) and reduces maintenance hassle.
4. Versatility & Compliance
Common Anode Polarity: Works with standard timer/clock driver ICs (e.g., TM1637, HT1621, MAX7219) — simplifies circuit design for manufacturers and supports timekeeping firmware (e.g., countdown logic, 12/24-hour format switching).
Multi-Color Options: Beyond ultra bright white, available in red (for alert timers, e.g., “00:00” end signals), blue (modern clock aesthetics), green (eco-aligned designs), amber, orange, and yellow—flexible for functional cues (e.g., red for “time’s up”) or brand-specific time device designs.
RoHS/REACH Compliant: Free from lead, mercury, and harmful substances—safe for home use (e.g., children’s bedroom clocks) and export to global markets (EU, North America, Asia), meeting consumer electronics safety standards.

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Technical Specifications