Ultra Bright White 12.7mm (0.5-Inch) 3-Digit (3½ Digit) 7-Segment Common Cathode LED Display for Refrigerators

Ultra Bright White 12.7mm (0.5-Inch) 3-Digit (3½ Digit) 7-Segment Common Cathode LED Display for Refrigerators

Product Overview
Introducing the Ultra Bright White 3-Digit (3½ Digit) 7-Segment Common Cathode LED Display—a fridge-optimized numeric solution engineered for refrigerator controllers, temperature/humidity indicators, and home appliances. Designed to prioritize wide temperature tolerance, clear readability, and durability, this display excels at showing fridge-specific metrics: positive fridge temperatures (e.g., “5°C”), sub-zero freezer temps (e.g., “-18°C”), or humidity levels (e.g., “60% RH”).
Its 12.7mm (0.5-inch) character height ensures readability from 1–2 meters (typical kitchen distance for fridge checks), while the 38.2×19×8mm form factor fits slim fridge control panels—no bulky redesigns required. The white segments on a black surface (with film) boosts contrast with ultra bright white light, cutting through kitchen glare (e.g., overhead lights, sunlight) without eye strain.
With a wide operating temperature range (-35°C ~ +85°C), common cathode polarity, and RoHS/REACH compliance, this display thrives in fridge environments (from cold freezers to warm kitchens) and delivers reliable performance for 24/7 use.

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Key Features (Refrigerator-Optimized)
1. Wide Temperature Tolerance for Fridge Environments
Extreme Temp Range (-35°C ~ +85°C): Specifically designed to withstand fridge/freezer cold (-35°C for deep freezers) and kitchen ambient heat (+85°C for warm kitchens)—avoids segment dimming, frost damage, or performance loss that plagues standard displays in extreme temps.
Freezer-Ready Design: No condensation buildup or component failure in sub-zero conditions, ensuring consistent readability of freezer temps (e.g., “-20°C”) even after long-term use.
Protective Film: The film on the black surface shields segments from fridge moisture, food splatters, and frequent wiping—easy to clean and maintains clarity over the fridge’s 10–15 year lifespan.
2. 3½ Digit Functionality for Sub-Zero & Precision Readouts
Negative Value Support: As a 3½ digit display, it handles values from -199 to 999—critical for showing sub-zero freezer temps (e.g., “-18°C”) without extra wiring. Users instantly distinguish fridge (“5°C”) from freezer (“-18°C”) without labels.
Precision for Fine Metrics: Supports decimal points for accurate temp/humidity readings (e.g., “4.5°C” for fridge, “55.5% RH” for humidity)—ideal for high-end fridges with precise climate control.
3. Superior Visibility & Energy Efficiency
Ultra Bright White Illumination: High luminous intensity ensures temps are clear in bright kitchens (e.g., morning sunlight) or dim rooms (e.g., nighttime fridge checks)—no squinting to read “2°C” vs. “7°C”.
Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes fridge energy use (critical for ENERGY STAR-certified models) and extends backup battery life (for power outages, keeping temps visible).
White Segments on Black Surface: High contrast eliminates “washout” and makes digits/minus signs sharp—avoids misreading “-8°C” as “8°C” (a costly mistake that could spoil frozen food).

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Technical Specifications

Shenzhen Guangzhibao (Light-Bo) Technology Co. Ltd is specialized in LED products, including LED 7 segment numeric displays, alphanumeric LED displays,dot-matrix LED Displays, SMD LEDs, LED lamps,LCD backlights,LED light bar, bar gragh arrays and LED direction indicator displays and more.
We offer top quality products at competitive prices to meet different requirement for industry applications. We introduced computerized operation system and complete QC system. Key raw materials are sourced from the US, Japan and Taiwan area, plus,we utilise an array of advanced production equipments from ASM and Risen,such as automatic dice bonding and wire soldering machines . We specialise in offering series of optoelectronic displays in pure green, pure white and ultra blue.All of our products comply with the RoHS Directives. Monthly capacity reaches 3,000,000pcs.
We have been in LED industry for more than 12 years. With more than 10 years OEM and ODM experience, our R&D engineers are at hand for your customization requirements. Samples can be ready in just 10-15 days. Contact us now !