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Super Bright Yellow 4 Digit 7 Segment LED Display Common Cathode
Introducing the Super Bright Yellow 4-Digit 7-Segment Common Cathode LED Display-a humidity indicator-optimized solution engineered for environmental controllers, home appliances, and instrument panels. Designed to prioritize clear readability of humidity/temperature metrics, energy efficiency, and stable performance, this 4-digit display excels at showing critical environmental data: relative humidity (e.g., "45% RH"), temperature, or process values.
Its 10.16mm (0.4-inch) character height ensures readability from 0.5-2 meters (typical for room humidity monitors or industrial control panels), while the 40.5×16×7mm slim profile fits seamlessly into compact humidity controllers and appliance dashboards-no bulky redesigns required. The yellow segments on grey surface creates balanced contrast with super bright yellow light, avoiding glare while remaining distinct in both bright and dim environments.
With common cathode polarity, low power consumption, and RoHS compliance, this display combines durability, energy efficiency, and global usability-ideal for 24/7 operation in humidity/temperature monitoring devices.
Key Features (Humidity Indicator-Optimized)
1. Super Bright Yellow Visibility for Environmental Data
Targeted Wavelength (585-595nm): Yellow light is eye-friendly for prolonged viewing (critical for 24/7 humidity monitors) and highly distinguishable from ambient light-avoids "washout" from sunlight or indoor lighting, ensuring quick recognition of humidity values.
Balanced Luminous Intensity (50-60mcd): Bright enough to stand out in busy environments (e.g., office instrument panels) without causing eye strain, making it ideal for residential humidity monitors (e.g., bedroom humidifiers) and industrial process controllers.
Yellow Segments on Grey Surface: Unique color combination reduces reflection and enhances segment clarity-no fuzzy edges on digits or symbols, ensuring accurate data capture for humidity-sensitive applications (e.g., greenhouse monitoring, electronics storage).
2. Compact Design & Easy Integration
Slim 40.5×16×7mm Dimensions: Fits into dense PCB layouts of humidity controllers, set-top boxes, and home appliances (e.g., smart air purifiers) without occupying excess space. Enables multi-parameter displays (e.g., humidity + temperature on a single panel) without expanding device size.
Common Cathode Polarity: Works with standard environmental controller driver ICs (e.g., TM1637, HT1621, MAX7219)-simplifies circuit design for manufacturers and integrates seamlessly with humidity/temperature sensing firmware (e.g., real-time data sampling, setpoint adjustments).
Easy Assembly: PCB direct-mountable design supports automated production lines-speeds up high-volume manufacturing and ensures secure, vibration-resistant installation (critical for industrial process controllers).
3. Energy Efficiency & Stable Performance
Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes energy use for battery-powered devices (e.g., portable humidity meters) and 24/7-run controllers (e.g., greenhouse environmental systems), extending battery life by up to 30% compared to standard displays.
Even Luminous Distribution: Segments emit uniform brightness-no "hot spots" or dim edges that distort digits, ensuring consistent readability of humidity/temperature values across all use cases.
Stable Operation in Variable Environments: Withstands temperature fluctuations (-10°C to 50°C, typical for indoor/outdoor humidity monitoring) and humidity ranges (10-90% RH)-no flickering or segment failure during environmental changes (e.g., sudden humidity spikes in basements).
Long Lifespan (50,000+ Hours): High-quality yellow LED chips and durable grey surface construction match the 8-10 year service life of most humidity controllers and home appliances-eliminating frequent replacements and reducing maintenance hassle.
4. Versatility & Compliance
Multi-Color Options: Beyond super bright yellow, available in red, blue, green, amber, orange, and white-flexible for functional differentiation or brand-specific designs.
RoHS Compliant: Free from lead, mercury, and harmful substances-safe for indoor use and export to global markets, meeting strict environmental and consumer safety standards.
Broad Application Scope: Compatible with humidity indicators, temperature controllers, set-top boxes, home appliances, and industrial process panels-reducing the need for multiple display types in product lineups.
5. Humidity-Specific Functionality
4-Digit Capacity for Precision Metrics: Supports 00.0-99.9% RH (humidity) and -9.9-99.9°C (temperature) with decimal points-critical for applications requiring fine control.
IC Compatibility with Sensing Modules: Seamlessly pairs with humidity sensors and microcontrollers-enabling real-time data sync and display without additional wiring or adapters.
Technical Specifications
| Category | Parameter | Specification (Humidity Indicator-Optimized) |
| Basic Design | Display Type | 4-Digit 7-Segment LED Display (supports decimals/% symbols for humidity/temp) |
| Polarity | Common Cathode | |
| Character Height | 0.4 inch (10.16mm) | |
| Outer Dimensions (L×W×H) | 40.5 × 16 × 7mm | |
| Segment/Surface Finish | Yellow Segments on Grey Surface | |
| Optical Performance | Emitting Color | Primary: Super Bright Yellow; Optional: Red/Blue/Green/Amber/Orange/White |
| Wavelength (Yellow) | 585-595nm | |
| Luminous Intensity (IV) | 50-60 mcd | |
| Electrical Parameters | Forward Voltage (VF) | 1.8-2.2V per LED (yellow/red/amber/orange); 2.8-3.2V (blue/green/white) |
| Forward Current | 5-10mA per LED | |
| Power Consumption | Low (extremely low current draw) | |
| Quality & Compliance | Core Advantages | High luminous intensity, even distribution, stable performance, easy assembly |
| Compliance | RoHS Compliant |
Product Parameters
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:Yellow Green- J
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.4 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 30 | 40 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 569 | 574 | nm |
Code:Amber/Yellow -Y
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.5 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 60 | 80 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 585 | 595 | nm |
Code:Orange -F
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.4 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 60 | 80 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 600 | 605 | nm |
Code:Super Bright Red -R
| 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 | 50 | 60 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 630 | 635 | nm |
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 |
Code:Pure Green -G
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.6 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 180 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 515 | 525 | nm |
Code:Ultra Bright Blue -BH
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.8 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 140 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 460 | 465 | nm |
Code:Ultra Bright White -WH
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.8 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 140 | mcd | |
| LED color Temperature | K | If=10mA | 5500 | 20 | 6800 | K |
Chromaticity Coordinates | X/Y | If=10mA | 0.29,0.32 | 0.30,0.33 | nm |
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.
Products Applications
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.
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FAQ
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 .
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