Ultra Bright Blue 10.16mm (0.4-Inch) 4-Digit 7-Segment Common Cathode LED Display for Digital Timers

Product Overview

Introducing the Ultra Bright Blue 0.4-Inch 4-Digit 7-Segment Common Cathode LED Display—a modern, high-visibility solution engineered for digital timers, LED clocks, and compact home appliances. Designed to prioritize sleek aesthetics (via ultra bright blue light), 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., "23:59"), or process durations (e.g., "1200" for 1200 seconds).

Its 10.16mm (0.4-inch) character height balances readability (clear from 0.5–2 meters, typical for desktop timers or wall clocks) and compactness, while the 40.5×16×7mm form factor fits into slim devices—from portable kitchen timers to smart set-top box displays. The white segments on a black surface create sharp contrast with ultra bright blue light (462-465nm), cutting through ambient glare (e.g., sunlight, room lamps) without eye strain, and adding a modern touch to home/industrial devices.

With common cathode polarity, low power consumption, and RoHS compliance, this display combines durability, eco-friendliness, and contemporary design—ideal for 24/7 operation in digital timers and timekeeping devices.

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Key Features (Digital Timer & Clock-Optimized)

1. Ultra Bright Blue Light for Modern Aesthetics & Visibility

Vivid Blue Illumination (80-100mcd, 462-465nm): Ultra bright blue light delivers a sleek, modern look—perfect for devices where aesthetics matter (e.g., smart clocks, premium set-top boxes). It stands out in bright environments (e.g., sunlit kitchens) and remains soft on the eyes in dim spaces (e.g., bedroom night clocks), avoiding harsh glare.

White Segments on Black Surface: High contrast eliminates "washout" and ensures digits (0-9) and time symbols (e.g., colon for "01:30") stay sharp—no misreading "10:00" as "16:00" (a mistake that could disrupt timing for cooking or processes).

Even Luminous Distribution: Light is uniformly spread across each segment (no "hot spots" or dim edges), so every bar of digits (e.g., the middle bar of "8") is consistent—guarantees accurate time recognition at a glance.

2. Compact Design & Easy Integration

Slim Dimensions (40.5×16×7mm): Fits into dense PCB layouts (e.g., multi-function timers with temp displays) or slim device enclosures (e.g., portable digital timers, wall-mounted mini clocks)—no need to enlarge designs for 4-digit time readouts.

Common Cathode Polarity: Works with standard timer/clock driver ICs (e.g., TM1637, HT1621, MAX7219)—simplifies circuit design, no need for custom polarity adapters, and integrates seamlessly with timekeeping firmware (e.g., countdown logic, 12/24-hour format switching).

Easy Assembly: Designed for PCB direct-mounting, compatible with automated production lines—speeds up manufacturing for high-volume devices (e.g., 10,000+ kitchen timers) and ensures consistent alignment in control panels.

3. Energy Efficiency & Stable Performance

Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes energy use—extends battery life for portable timers (e.g., 200+ hours on AA batteries) and reduces electricity costs for plugged-in clocks (e.g., wall-mounted time displays).

High Efficiency: Optimized forward voltage (2.8-3.2V) ensures minimal power waste while maintaining high brightness—aligns with eco-friendly device trends (e.g., energy-saving home appliances).

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 blue LED chips match the 8–10 year service life of most timers/clocks—eliminates frequent display replacements, reducing maintenance hassle for users.

4. Versatility & Compliance

Multi-Color Options: Beyond ultra bright blue, available in red (for alerts), green (eco-aligned designs), amber, orange, white, and more—flexible for functional cues (e.g., red for "time's up" alerts, green for "normal" operation) or brand-specific device aesthetics.

RoHS 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.

Technical Specifications

Applications

This display is tailored for timekeeping devices and modern electronics, including:

Digital Timers: Kitchen countdown timers (e.g., "05:00" baking time), fitness timers (e.g., "20:00" workout), or industrial process timers (e.g., "1800" seconds).

LED Clocks: Slim wall clocks (e.g., "12:30"), desk clocks (e.g., "23:59"), or smart home clocks (e.g., "08:00" wake-up time).

Home Appliances: Microwave ovens (cook time "02:30"), electric ovens (preheat time "00:15"), or air fryers (cook time "01:00").

Instrument Panels: Set-top boxes (channel "120" + time "14:30"), audio equipment (track time "03:45"), or portable generators (runtime "02:00").

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Why Choose This Display for Digital Timers?

Modern Aesthetics: Ultra bright blue light adds a sleek look to devices—appealing for premium home appliances or smart electronics.

Time Readout Clarity: High contrast + even light ensure time (and colon separators) are readable at a glance—avoids missing "time's up" alerts.

Space-Saving Fit: Compact dimensions work for portable timers and slim clocks—no need to compromise device design for multi-digit time displays.

Energy & Cost Efficiency: Low current use extends portable timer battery life; long lifespan reduces maintenance costs.

Global Compliance: RoHS certification simplifies export to international markets, aligning with consumer time device safety standards.

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 + 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.

Transport: Express (FedEx/DHL for urgent timer prototypes), Air (medium-volume), Ocean (bulk production runs for timer/clock manufacturers).