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drop-in replacement for outdated timers/clocks (e.g., upgrading old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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