Customized Ultra Bright White 4-Digit 7-Segment Common Cathode LED Display for Microwave Oven Timers

Customized Ultra Bright White 4-Digit 7-Segment Common Cathode LED Display for Microwave Oven Timers

Introducing the Customized Ultra Bright White 4-Digit 7-Segment Common Cathode LED Display—a microwave-optimized solution engineered for oven timers, cooking control panels, and high-temperature home appliances. Designed to prioritize extreme heat resistance, clear timer readouts, and kitchen durability, this 4-digit display excels at showing microwave-specific metrics: cooking time, power level, defrost time, or error codes.
Its 0.49-inch character height ensures readability from 0.5–1.5 meters (typical kitchen counter distance), while the 61×43×20mm robust profile fits standard microwave control panels—no forced redesigns required. The ultra bright white light cuts through microwave cavity glare and kitchen ambient light, and the extreme operating temperature range (max. 105–120°C) ensures performance even near microwave heating elements.
With common cathode polarity, low power consumption, and RoHS/REACH compliance, this display thrives in the high-heat, high-humidity microwave environment—ideal for 24/7 use in daily cooking scenarios.

Key Features (Microwave Oven Timer-Optimized)
1. Extreme High-Temperature Resistance
Max Operating Temp (105–120°C): Engineered to withstand the intense heat generated by microwave ovens (e.g., near heating chambers, during prolonged high-power cooking). No segment dimming, flickering, or failure—critical for maintaining visible timer readouts during 30+ minute cooking sessions.
Heat-Resistant Materials: Black face and LED components use high-temperature epoxy and flame-retardant materials, avoiding deformation or discoloration even in direct proximity to microwave heat sources. Resists thermal shock (rapid temperature changes from cold standby to hot cooking mode) without performance degradation.
2. Ultra Bright White Visibility for Timer Readouts
High-Luminous Intensity: Ultra bright white light ensures timer digits and symbols (colon for time separation) are crisp and distinguishable—even through microwave door glass or kitchen glare (e.g., sunlight, overhead lights). Prevents misreading “01:30” as “00:13” (a common cooking error) and ensures quick recognition of timer countdowns.
Big Viewing Angle: Uniform light distribution across all segments enables readability from off-center positions (e.g., stirring a pot while glancing at the microwave)—no need to lean in to check remaining time, enhancing cooking safety and convenience.
Black Face Contrast: Black face background amplifies the brightness of white segments, eliminating “washout” and ensuring clarity in all kitchen lighting conditions (e.g., dim morning kitchens, bright afternoon sun).
3. Durable & Kitchen-Resilient Performance
Low Power Consumption: Minimal current draw reduces electricity use for microwaves (which run on frequent short cycles) and aligns with energy-saving home trends—cuts long-term utility costs without compromising brightness.
Stable Performance & Good Consistency: All segments emit uniform brightness (no “hot spots” or dim edges), ensuring consistent readability of timer values and power levels. Withstands humidity, steam, and minor vibrations (e.g., closing microwave doors, kitchen traffic) without flickering or segment failure.
Long Lifetime (50,000+ Hours): High-quality white LED chips and heat-resistant components match the 8–10 year service life of most microwaves—eliminates frequent display replacements, reducing maintenance hassle for users.
4. Easy Integration & Compliance
Common Cathode Polarity: Works with standard microwave driver ICs—simplifies circuit design for manufacturers and integrates seamlessly with microwave firmware.
Through-Hole (PTH/DIP) Pin Type: Easy to assemble on microwave PCBs via manual or automated soldering—ensures secure, vibration-resistant connections (critical for microwaves with high-frequency operation). Compatible with legacy and modern microwave control boards, reducing redesign costs.
Dual Compliance (RoHS/REACH): Free from lead, mercury, and harmful substances—safe for food-related kitchen use (no toxic emissions when exposed to heat/steam) and export to global markets (EU, North America, Asia), meeting strict consumer appliance safety standards.
Multi-Color Versatility: Beyond ultra bright white, available in red (alert values, e.g., “ERR”), blue (modern aesthetics), green (eco-mode), amber, and orange—flexible for brand-specific designs or functional differentiatio.
5. Timer-Specific Functionality
4-Digit Capacity with Colon: Supports timer ranges from “00:00” (1 minute) to “99:59” (1 hour 39 minutes)—covers all standard microwave cooking times. Colon symbol maintains steady illumination for clear time separation (e.g., “02:30” = 2 minutes 30 seconds).
IC Compatibility with Timer Modules: Seamlessly pairs with microwave timer chips (e.g., NE555, CD4060) and microcontrollers (e.g., PIC16F877A)—enables precise countdown control, pause/resume functionality, and automatic shutoff displays without additional adapters.

Technical Specifications

Absolute Maximum Ratings(Ta=25ºC)

Code:Yellow Green- J

Code:Amber/Yellow -Y

Code:Orange -F

Code:Super Bright Red -R

Code:Ultra Bright Red -UR

Code:Pure Green -G

Code:Ultra Bright Blue -BH

Code:Ultra Bright White -WH

    Shenzhen Guangzhibao Technology Co., Ltd. (Brand: Light-Bo) stablished in 2006 , A company that integrates R & D, manufacturing and sales of optoelectronics LED Displays . ISO 9001 2015 Quality Management Systems certified company . With more than 15 years OEM and ODM experience .
    LightBo has been committed to provide high quality and low cost customized solutions to help customers reduce cost and enhance competitiveness.

    7 Segment LED Display, Customized LED Display, Numeric LED Display, Dot matrix LED Display, widely used for home appliances,tempearture indicators, humidity indicators, refrigerator controller,thernostats indicator,heating and cooling control and so on.

FAQ(Frequently Asked Questions)
Q1 Are you trading company or manufacturer
A: We are original manufacturer with more than 20 years experience in optoelectronic LED displays .
Q2 What is your main products
A: Our main products include 7 Segment LED display, SMD LED Display,Dot matrix LED Display, Arrow LED display, Custom Design LED Display ,LED light bar,Through hole led, SMD LEDs,LED Backlights, and so on .
Q3 What is your MOQ
A: Our MOQ is 1000 pcs , We can also accept sample orders and small orders with quantity less than our MOQ .
Q4 Before placing order, Can I get some samples for test
A: Yes. We can provide 5-10 free samples for your testing, but the freight cost will be borne by the customer.
Q5 How long is your delivery time
A: Delivery time:About 10-20 days; According to order quantity and raw materials. If you have urgent order,and we have raw materials in stock,we can adjust our production plan to make it ready within 7-10 days .
Q6 What is your terms of payment
A: We accept bank transfer,T/T,Western Union and Paypal with small amount. Detailes of payment methods can be negotiatble.
Q7 Can you quote me FOB prices
A: Yes. We can quote you prices based on incoterms EXW, FOB, CIF,DDP.
Q8 How can I get your catalogue and price list
A: Yes . Please let us know your email address or contact us from website directly for our catalogue and price list .
Q9 Can I negotiate the prices
A: Yes, we may consider discounts for bulk orders.
Q10 How much will the shipping charges be
A: It depends on the size of your shipment and the method of shipping.
We will offer the charge to you as you requested.
Q11 Can you do custom design products
A: Yes , OEM&ODM service are available .We can customize the sizes,led color and functional icons according to your requirements.
Q12 If I send my design , can you make it for myself only ,and will not show it to any one else
A: Yes , we will not show it or sell to others without your authorization.
Q13 What will be the samples lead time for customized products
A: Samples lead time will be about 20-25 working days after receiving mold cost and mold drawing approval from customers .
Q14 What is the shipping methods
A:We usually ship the goods by DHL, FEDEX,UPS,EMS,BY AIR,BY SEA etc, also you can choose the other way that best for you.
Q15 How do you ensure the quality of your products
A: we are ISO 9001 QMS ceritified manufacturers with more than 20 years experience ,We conduct twice 100% percent test for all of our products before shipment .