Ultra Bright Red 0.4-Inch (10.16mm) Single-Digit 7-Segment Common Cathode LED Display for Digital Weighing Scale Indicators
Product Overview
Introducing the Ultra Bright Red 0.4-Inch (10.16mm) Single-Digit 7-Segment Common Cathode LED Display—a precision-engineered numeric solution tailored for digital weighing scale indicators and compact digit displays. Designed to prioritize readability, durability, and space efficiency, this single-digit module excels at showing weight values (e.g., “0” to “9” for grams, kilograms, or pounds) in commercial and home weighing scenarios—from kitchen food scales to industrial parcel scales.
Its 0.4-inch (10.16mm) character height ensures clarity from 0.5–1.5 meters (typical weighing scale viewing distance), while the ultra-compact 9.8×18.7×5.1mm form factor fits seamlessly into multi-digit weighing scale panels (e.g., 4 displays combined for “123.4g”). The white segments on a black surface boost contrast with ultra bright red light, ensuring visibility even in bright ambient light (e.g., supermarket checkout areas, sunlit kitchens). With common cathode polarity, low power consumption, and RoHS compliance, it balances reliability, energy efficiency, and global safety standards—ideal for 24/7 weighing scale operation.
Absolute Maximum Ratings(Ta=25ºC)
| Parameter | Symbol | Ratings | Unit |
| Forward Current(per dice) | Ipm | 20 | mA |
| Reverse Voltage(per dice) | Vr | 5 | V |
| Power Dissipation(per dice) | Pm | 80 | mW |
| Operating Temperature Range | Topr | -40~+85 | ºC |
| Storage Temperature Range | Tstg | -40~+85 | ºC |
| Solder Temperature(≤3 seconds) | Th | 260 | ºC |
Code:Ultra Bright Red -UR
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | | 2.2 | V |
| Reverse Voltage | Vr | Ir=10uA | 5 | | | V |
| Luminous Intensty | Iv | If=10mA | 80 | | 100 | mcd |
| Spectrum With Of Half Value | △λ | If=10mA | | 20 | | nm |
| Wavelength | Dλ | If=10mA | 625 | | 635 | nm |
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Key Features (Weighing Scale-Optimized)
1. Superior Visibility for Weight Readouts
Ultra Bright Red Illumination (80-90mcd): Red light cuts through bright ambient light (fluorescent store lights, sunlight) to ensure weight digits are crisp and readable—critical for accurate weighing (e.g., avoiding errors in grocery checkout scales or home baking measurements).
White Segments on Black Surface: High contrast eliminates glare and ensures every segment (e.g., the top bar of “8,” the bottom bar of “6”) is distinct—prevents misreading digits (e.g., confusing “3” with “8”) that could lead to weight miscalculations.
10.16mm Character Height: Balances readability and compactness—large enough to distinguish small weight increments (e.g., “1g” vs. “2g”) but small enough to fit 3–5 digits in a narrow weighing scale panel.
2. Space-Efficient & Easy to Integrate
Ultra-Compact Size (9.8×18.7×5.1mm): Designed for multi-digit weighing scale layouts—multiple displays can be stacked horizontally (e.g., 4 displays for “1200g”) without wasting space, ideal for slim, portable scales (e.g., pocket travel scales) or countertop models with limited panel room.
Common Cathode Polarity: Works with standard weighing scale driver ICs (e.g., TM1637, HT1621) — simplifies circuit design for scale manufacturers and supports seamless integration with weight-sensing modules (e.g., load cells).
Easy Assembly: Compatible with PCB mounting and automated production lines—scales can be mass-produced efficiently, reducing labor costs and ensuring consistent display alignment (critical for multi-digit readouts).
3. Reliable Performance for Weighing Scenarios
Stable Operation in Variable Environments: Withstands temperature fluctuations (0°C–50°C, typical for stores/kitchens) and minor vibrations (e.g., placing items on the scale), maintaining uniform segment brightness—no flickering during weight updates.
Long Lifespan (50,000+ Hours): High-quality LED chips match the 5–8 year service life of most weighing scales, reducing maintenance and replacement costs (critical for commercial scales used 8+ hours daily).
Low Power Consumption (10–15mA/LED): Minimizes energy draw, making it ideal for battery-powered portable scales (e.g., luggage scales) — extends battery life by 25% compared to higher-current displays, reducing user hassle of frequent charging.
4. Versatility & Compliance
Multi-Color Options: Beyond ultra bright red, choose from blue (modern aesthetics), green (eco-aligned designs), white, amber, or orange—flexible for brand identity (e.g., white for premium kitchen scales) or functional cues (e.g., red for “overweight” alerts).
Customizable Design: Supports customer-specific specifications (e.g., modified segment size, adjusted brightness, or custom form factors) to fit unique weighing scale models (e.g., industrial heavy-duty scales or mini jewelry scales).
RoHS Compliant: Free from lead, mercury, and other harmful substances—meets global safety standards for consumer and commercial electronics, ensuring compliance in markets like Europe, North America, and Asia.
Technical Specifications
| Category | Parameter | Specification (Weighing Scale-Optimized) |
| Basic Design | Display Type | Single-Digit 7-Segment LED Display |
| | Polarity | Common Cathode |
| | Character Height | 0.4 inches (10.16mm) |
| | Outer Dimensions (L×W×H) | 9.8 × 18.7 × 5.1mm |
| | Segment/Surface Finish | White segments on Black Surface |
| Optical Performance | Emitting Color | Primary: Ultra Bright Red; Optional: Blue/green/white/amber/orange |
| | Luminous Intensity | 80-90 mcd |
| Electrical Parameters | Forward Voltage (VF) | 1.8-2.3V per LED |
| | Recommended Forward Current | 10-15mA per LED |
| | Power Consumption | Low (energy-efficient for battery/AC-powered scales) |
| Quality & Compliance | Core Advantages | High efficiency, even light distribution, stable performance, long lifespan |
| | Compliance | RoHS Directive-Compliant |
Applications
While optimized for digital weighing scale indicators, this display also excels in:
Audio Equipment: Volume level indicators (e.g., “5” for medium volume) or track number displays.
Instrument Panels: Compact numeric readouts for voltage monitors (e.g., “12V”), pressure gauges (e.g., “2MPa”), or temperature sensors (e.g., “25°C”).
General Digit Indicators: Countdown timers (e.g., “3” for 3 seconds), appliance status lights (e.g., “1” for “on”), or vending machine selection numbers.
Commercial Devices: Cash register numeric keys, parking meter time displays, or fitness equipment (e.g., “8” for workout level).
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Why Choose This Display for Weighing Scales?
Weight Readout Clarity: Ultra bright red light and high contrast ensure accurate digit recognition—avoids costly weighing errors in commercial settings.
Space-Saving Design: Compact size enables multi-digit layouts in slim scales, without sacrificing readability.
Battery Efficiency: Low power use extends life for portable scales—critical for users who travel with luggage scales or use kitchen scales away from outlets.
Commercial-Grade Durability: Long lifespan and stable performance handle 24/7 use in stores or factories, reducing maintenance downtime.
Customizable: Supports tailored designs to fit unique scale models—from mini jewelry scales to industrial heavy-duty scales.
Order & Logistics Information
Minimum Order Quantity (MOQ): 500 pieces for standard ultra bright red models; 1,000 pieces for custom 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; 10–14 days for custom designs (from specification approval).
Transport: Express (FedEx/DHL for urgent prototype orders), Air (medium-volume shipments), Ocean (bulk production runs for scale manufacturers).
Contact Us
Our team specializes in LED displays for precision measurement devices and provides 24-hour support to help you optimize your weighing scale’s usability, accuracy, and visual appeal!
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Ultra Bright Red Single Digit 7 Segment LED Display Common Cathode Images
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