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Description:
Introduction
The single-digit LED 7 segment display 0.28″ is a crucial component in many electronic devices, offering high visibility and precision in displaying numerical information. Utilizing 7 segment display technology, these displays are indispensable in various applications, from consumer electronics to industrial equipment. This article delves into the features, applications, and benefits of the 0.28-inch single-digit LED 7 segment display, supported by case studies and user testimonials.
Features of the Single-Digit LED 7 Segment Display 0.28″
The single-digit LED 7 segment display 0.28″ is packed with features that make it a valuable addition to numerous devices:
- High Visibility: Despite its compact size, the display offers clear and bright numeric representation, ensuring readability from various distances.
- Energy Efficiency: LED technology ensures low power consumption, making these displays cost-effective over the long term.
- Durability: Built to withstand various environmental conditions, these displays are robust and reliable.
- Versatility: The 7 segment display technology is straightforward and can be easily integrated into various systems, including custom 7 segment display configurations.
- Compact Design: The 0.28-inch size is perfect for applications where space is limited but visibility is crucial.
Applications of the Single-Digit LED 7 Segment Display 0.28″
These displays find wide-ranging applications across different industries due to their reliability and compact design:
- Consumer Electronics: Commonly found in household devices such as digital clocks, kitchen appliances, and calculators.
- Industrial Equipment: Used in control panels to display critical operational data and metrics.
- Medical Devices: Essential for showing clear data on devices such as thermometers, blood pressure monitors, and other medical equipment.
- Public Information Systems: Employed in ticketing machines, public transport systems, and information boards to display numeric information.
- Educational Tools: Widely used in teaching aids and experimental setups, especially in seven segment display in digital electronics projects.
Benefits of the Single-Digit LED 7 Segment Display 0.28″
Adopting a single-digit LED 7 segment display 0.28″ offers numerous benefits:
- Precision and Clarity: The display provides clear and precise numerical information, essential for accurate readings.
- Energy Efficiency: With minimal power consumption, these displays are both economical and environmentally friendly.
- Compact Design: The small size allows for integration into a variety of devices without occupying much space.
- User-Friendly: Easy to use and understand, making them accessible for a wide range of applications.
- Flexible Integration: Can be easily incorporated into various systems, including those using custom 7 segment display configurations.
Case Studies of the Single-Digit LED 7 Segment Display 0.28″
Case Study 1: Medical Application
A healthcare device manufacturer integrated the single-digit LED 7 segment display 0.28″ into their digital thermometers. This integration led to enhanced readability and accuracy, significantly improving user satisfaction and product reliability.
Case Study 2: Industrial Control Panels
An industrial equipment manufacturer implemented these displays in their control panels to monitor machinery performance. The clear and reliable displays helped reduce errors and improve operational efficiency by providing accurate real-time data.
User Testimonials
Testimonial 1: Electronics Manufacturer Engineer
“Integrating the 7 segment display technology into our products has greatly improved our device functionality. The compact size and clear visibility are exactly what we needed for our space-constrained designs.”
Testimonial 2: Educational Tool Developer
“The single-digit LED 7 segment display 0.28″ has been a game-changer in our educational kits. It’s easy to use and provides excellent clarity, helping students understand seven segment display in digital electronics concepts better.”
Extra Section: Comparing with 1 Digit 7 Segment Display
While a 1 digit 7 segment display is effective for displaying single-digit numerical data, the 7 segment display technology used in the 0.28-inch display offers enhanced flexibility and compactness for various applications. The 1-digit displays are suitable for larger devices, but the 0.28-inch single-digit displays are ideal for portable and small-scale devices. This makes the 0.28-inch display perfect for applications requiring minimal space without compromising readability.
Conclusion
The single-digit LED 7 segment display 0.28″ is a versatile and reliable choice for various applications, from consumer electronics to industrial machinery. Its high visibility, durability, and energy efficiency make it an invaluable component in modern electronic systems. Whether you are an electronics manufacturer, a purchaser, or an administrator, integrating these displays can enhance the functionality and user experience of your products.
Call to Action
If you’re looking to improve the clarity and efficiency of your electronic displays, consider the single-digit LED 7 segment display 0.28″. Contact us today to learn more about how this technology can benefit your operations.
Features
- 0.28-Inch Digit Height (7.00mm): Compact digit size for applications where space is limited.
- Dimensions (Width x Height): 8.15 x 9.85mm: Small and efficient, making it ideal for miniature electronic devices.
- Single Decimal Point: Enables the display of decimal values, increasing its utility in various applications.
- Single LED Chip per Segment: Ensures uniform brightness and consistent character appearance.
- Common Anode or Cathode Selection: Offers flexibility in circuit design, accommodating different electrical setups.
- Low Current Operation: Energy-efficient, ideal for battery-operated or power-sensitive devices.
- Excellent Character Appearance: High-quality display ensures clear and sharp representation of characters.
- High Light Output: Bright enough for readability in different ambient lighting conditions.
- Easy Mounting on PC Boards or Sockets: Simplifies the installation process in electronic assemblies.
- IC Compatible: Can be integrated with integrated circuits, suitable for complex electronic systems.
- Multicolor Availability: Offers a range of color options for aesthetic and functional customization.
- Categorized for Luminous Intensity: Guarantees uniform brightness levels across units, ensuring consistency in display quality.
- Technically Rugged: Durable and reliable, capable of withstanding various operational conditions.
- Standard Design: Gray Surface, White Segment: Provides a classic look with good contrast for readability.
- RoHS Compliance: Meets environmental safety standards by avoiding the use of hazardous materials.
Applications
- Consumer Electronics: Suitable for devices like digital watches, small portable timers, and pocket calculators.
- Medical Equipment: Useful in compact medical devices for displaying vital information such as pulse rate or oxygen levels.
- Automotive Displays: Can be used in car dashboards for showing small indicators or warning signals.
- Telecommunication Devices: Applicable in network hardware or communication devices for signal strength indicators or channel numbers.
- Wearable Technology: Ideal for integration into wearable devices due to its compact size and low power consumption.
- Industrial Instrumentation: Suitable for control panels in machinery or equipment where space is constrained.
- Handheld Devices: Perfect for any handheld electronic device where a compact and clear numeric display is needed.
Electrical-optical characteristics:
Part No. (Cathode) | Part No. (Anode) | Emitting Color | Material | Peak Wavelength (nm) | Voltage typ.(v) | Voltage max. (v) | Luminous min | Luminous typ |
|---|---|---|---|---|---|---|---|---|
BL-S28A-12B |
BL-S28B-12B |
Ultra Blue |
InGaN |
470 |
4.2 |
25 |
||
BL-S28A-12D |
BL-S28B-12D |
Super Red |
GaAlAs/GaAs,DH |
660 |
2.2 |
12 |
||
BL-S28A-12E |
BL-S28B-12E |
Red |
GaAsP/GaP |
635 |
2.5 |
10 |
||
BL-S28A-12G |
BL-S28B-12G |
Green |
GaP/GaP |
570 |
2.5 |
10 |
||
BL-S28A-12PG |
BL-S28B-12PG |
Ultra Pure Green |
InGaN |
525 |
4.5 |
22 |
||
BL-S28A-12S |
BL-S28B-12S |
Hi Red |
GaAlAs/GaAs,SH |
660 |
2.2 |
6 |
||
BL-S28A-12UE |
BL-S28B-12UE |
Ultra Red |
AlGaInP |
630 |
2.5 |
12 |
||
BL-S28A-12UG |
BL-S28B-12UG |
Ultra Green |
AlGaInP |
574 |
2.5 |
18 |
||
BL-S28A-12UHR |
BL-S28B-12UHR |
Ultra Red |
AlGaInP |
645 |
2.5 |
14 |
||
BL-S28A-12UR |
BL-S28B-12UR |
Ultra Red |
GaAlAs/GaAs,DDH |
660 |
2.2 |
14 |
||
BL-S28A-12UY |
BL-S28B-12UY |
Ultra Yellow |
AlGaInP |
590 |
2.5 |
12 |
||
BL-S28A-12W |
BL-S28B-12W |
Ultra White |
InGaN |
- |
4.2 |
30 |
||
BL-S28A-12Y |
BL-S28B-12Y |
Yellow |
GaAsP/GaP |
585 |
2.5 |
10 |
||
BL-S28A-12YO |
BL-S28B-12YO |
Ultra Amber |
AlGaInP |
619 |
2.5 |
12 |
Package configuration & Internal circuit diagram
All dimensions are in millimeters(inches)
Tolerance is +-0.25(0.01″) unless otherwise note
Specifications are subject to change without notice.
Partno description:
LED seven segment , called also LED numeric display, is widely applied in home appliance panel display and other application.
More information
Reflector Surface color (1st number)/ Segment Lens color (2nd number):
| Number | 0 | 1 | 2 | 3 | 4 | 5 |
| Ref Surface Color | White | Black | Gray | Red | Green | |
| Epoxy Color | Water clear | White diffused | Red Diffused | Green Diffused | Yellow Diffused |
Absolute maximum ratings (Ta= 25°C)
| Parameter | S | D | UR | E | Y | G | Unit | |
| Forward Current IF | 25 | 25 | 25 | 25 | 25 | 30 | mA | |
| Power Dissipation Pd | 60 | 60 | 60 | 60 | 60 | 65 | mW | |
| Reverse Voltage VR | 5 | 5 | 5 | 5 | 5 | 5 | V | |
| Peak Forward Current IPF (Duty 1/10 @1KHZ) | 150 | 150 | 150 | 150 | 150 | 150 | mA | |
| Operation Temperature TOPR | -40 to +80 | °C | ||||||
| Storage Temperature TSTG | -40 to +85 | °C | ||||||
| Lead Soldering Temperature TSOL | Max.260+ 5°C for 3 sec Max. ( 1.6mm from the base of the epoxy bulb) | °C | ||||||
Absolute maximum ratings (Ta= 25°C)
| Parameter | UHR | UE | YO | UY | UG | PG | UB | UW | Unit |
| Forward Current IF | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | mA |
| Power Dissipation Pd | 75 | 65 | 65 | 65 | 75 | 110 | 120 | 120 | mW |
| Reverse Voltage VR | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | V |
| Peak Forward Current IPF (Duty 1/10 @1KHZ) | 150 | 150 | 150 | 150 | 150 | 150 | 100 | 100 | mA |
| Operation Temperature TOPR | -40 to +80 | °C | |||||||
| Storage Temperature TSTG | -40 to +85 | °C | |||||||
| Lead Soldering Temperature TSOL | Max.260+ 5°C for 3 sec Max. ( 1.6mm from the base of the epoxy bulb) | °C | |||||||
Related Information
Applied for:
1. Application
The Seven Segment LED is widely applied for ordinary electronic equipment (such as office equipment,
communication equipment and household applications). Checking with BETLUX’s Sales in
advance for information on applications in which exceptional reliability is required, particularly
when the failure or malfunction of the LEDs may directly jeopardize life or health (such as in
aviation, transportation, traffic control equipment, medical and life support systems and safety
devices).
2. Storage
The storage ambient for the Seven Segment LED should not exceed 30℃ temperature or 70% relative humidity.
For extended storage out of their original packaging, it is recommended that the Seven Segment LEDs be stored
in a sealed container with appropriate desiccant, or in a desiccator with nitrogen ambient.
3. Cleaning
Avoid using any unspecified chemical solvent to clean LED . For example, Trichloroethylene, Chlorosen, Acetone, and Diflon S3MC.
Any cleaning method can only be taken under normal temperature in one minute or less if it is required.
Use water to clean the Seven Segment LED if necessary under room temperature
dry it immediately after that.
4.Forming
Any unsuitable stress applied to the epoxy may break bonding wires in LED
Any forming on lead pin must be done before soldering, not during or after soldering.
Avoid applying any stress to resin in order to prevent the epoxy fracture and break on bonding wire.
While forming, please use a tie bar cut or equivalent to hold or bend the pin.
2mm from the base of resin is the minimum distance for the place bending the lead pin.
Avoid bending the lead pin at the same point twice or more.
Soldering
When soldering, leave a minimum of 2mm clearance from the base of the base of the lens to the soldering point. Dipping the lens into the solder must be avoided.
Do not apply any external stress to the lead frame during soldering while the LED is at high temperature.
Recommended soldering conditions:
| IR Reflow Soldering (for SMD display) | Wave Soldering | Soldering Iron | |||
| Pre-Heat | 150-180°C | Pre-Heat | 100°C Max. | Temperature | 300°C Max. |
| Pre-Heat Time | 120sec Max. | Pre-Heat Time | 60sec Max. | ||
| Peak Temperature | 260°C Max. | SolderWave | 260°C Max. | Soldering Time | 3sec Max.(one time only) |
| Soldering Time | 10 sec Max. | Soldering Time | 5sec Max. | ||
Note: Excessive soldering temperature and/or time might result in deformation of the LED lens or failure of the LED
ESD(Electrostatic Discharge)
Static Electricity or power surge will damage the LED.
Suggestions to prevent ESD (Electrostatic Discharge):
n Use a conductive wrist band or anti-electrostatic glove when handling these LEDs
n All devices, equipment, and machinery must be properly grounded
n Work tables, storage racks, etc. should be properly grounded
n Use ion blower to neutralize the static charge which might have built up on surface of the LED’s
plastic lens as a result of friction between LEDs during storage and handling
ESD-damaged LEDs will exhibit abnormal characteristics such as high reverse leakage current,
low forward voltage, or “no light on” at low currents. To verify for ESD damage, check for “light on”
and Vf of the suspect LEDs at low currents.
The Vf of “good” LEDs should be>2.0V@0.1mA for InGaN product and >1.4V@0.1mA for AlInGaP
product.
LED dirve IC by Maxim Integrated
MAX6959 4½-Digit LED Display Driver
MAX6958 4½-Digit LED Display Driver
MAX6955 7-, 14-, 16-Segment LED Display Driver
MAX6956 LED Static Display Driver and I/O Port
MAX6954 7-, 14-, 16-Segment LED Display Driver
MAX6952 5 x 7 Matrix LED Display Driver
MAX6957 LED Static Display Driver and I/O Port
MAX6950 5-Digit LED Display Driver
MAX6951 8-Digit LED Display Driver
ICM7212 4-Digit LED Driver
ICM7212A 4-Digit LED Driver
ICM7212AM 4-Digit LED Driver
ICM7212M 4-Digit LED Driver
ICM7218A 8-Digit LED Driver
ICM7218B 8-Digit LED Driver
ICM7218C 8-Digit LED Driver
ICM7218D 8-Digit LED Driver
MAX7221 8-Digit LED Display Driver
MAX7219 8-Digit LED Display Driver
When selecting power for LED systems, it’s essential to understand several key parameters to ensure safe operation, longevity, and optimal performance. Here are some steps and considerations for LED power selection:
- Determine the Forward Voltage (Vf) of the LED(s):
Each LED has a forward voltage, which is the voltage at which the LED operates when the current is flowing through it. This value can typically be found in the LED’s datasheet.
- Determine the Forward Current (If) of the LED(s):
The forward current is the current at which the LED is designed to operate. Running an LED at higher than its rated current can reduce its lifespan and increase the heat it produces.
- Decide on the Configuration:
Series Configuration: When LEDs are connected in series, the forward voltages add up, but the current remains the same.
Parallel Configuration: When LEDs are connected in parallel, the forward voltage remains the same, but the currents add up. This configuration can be risky because if one LED fails or has a slightly lower forward voltage, it can cause the other LEDs to draw more current.
Calculate Total Power Requirements:
Power (W) = Total Forward Voltage (V) x Total Forward Current (A)
For example, if you have three LEDs connected in series, each with a forward voltage of 3V and a forward current of 20mA, the total power requirement would be:
Power = (3V + 3V + 3V) x 20mA = 9V x 0.02A = 0.18W
- Select an Appropriate Power Supply:
- Voltage Rating: The power supply voltage should match or slightly exceed the total forward voltage of your LED configuration.
- Current Rating: The power supply’s current rating should meet or exceed the total forward current of your LED configuration.
- Safety Margin: It’s a good practice to select a power supply that can provide at least 20% more power than your calculated requirement. This ensures the power supply isn’t operating at its maximum capacity, which can extend its life and ensure safer operation.
- Consider Additional Features:
- Dimming Capability: If you want to control the brightness of your LEDs, choose a power supply with dimming capabilities.
- Overcurrent and Overvoltage Protection: To protect your LEDs, select a power supply with built-in protection mechanisms.
- Thermal Management: Ensure that the power supply has adequate cooling, especially if it will be enclosed or in a location with limited airflow.
- Regulation and Efficiency:A power supply with good regulation will maintain a consistent voltage output despite variations in the load. High efficiency ensures minimal power is wasted as heat.
- Physical Size and Form Factor:Depending on where you plan to place the power supply, its size and shape may be critical factors.
In summary, when selecting power for LED systems, understanding your LED’s requirements and the configuration you plan to use is essential. Then, pick a power supply that meets those needs with some added safety margin, keeping in mind any additional features or constraints relevant to your project.
Here are some well-regarded brands in the industry:
- Mean Well: One of the most recognized brands in the LED power supply industry, Mean Well offers a wide range of products suitable for both indoor and outdoor applications. Their units often come with features like overcurrent protection, dimming capabilities, and high efficiency.
- Tridonic: A global leader in lighting technology, Tridonic offers LED drivers and power supplies that cater to various lighting solutions, from simple setups to advanced smart lighting systems.
- Philips Advance Xitanium: Philips is a well-known brand in the lighting industry, and their Xitanium series of LED drivers are known for reliability and performance. They cater to both indoor and outdoor LED applications.
- Osram: Another giant in the lighting industry, Osram offers a range of LED drivers and power supplies suitable for various applications, including architectural and street lighting.
- LIFUD: Specializing in LED drivers, LIFUD is known for its high-quality products that cater to both commercial and residential LED lighting solutions.
- MOSO: This brand offers a variety of LED drivers, especially for outdoor and industrial applications. Their products are known for durability and performance.
- TDK-Lambda: With a history in power electronics, TDK-Lambda offers a range of power supplies and LED drivers suitable for various applications, emphasizing reliability and advanced features.
