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1.50 inch double numeric LED display
In the realm of electronic displays, the 1.50 inch dual-digit seven-segment LED display stands out as a beacon of clarity and efficiency. Catering to the needs of electronics manufacturers, engineers, purchasers, and administrators, this exploration delves into the intrinsic features, widespread applications, and tangible benefits of these displays. Enhanced with case studies and user testimonials, this guide aims to illuminate their crucial role in the evolution of electronic display technology.
Introduction to Seven-Segment LED Displays
The “7 segment digital display,” with its distinct arrangement of individual segments, provides a straightforward method for depicting numerical data. This dual-digit format allows for the presentation of numbers from 00 to 99, making it ideal for a broad array of applications where precision and clarity are paramount.
Technical Features and Advantages
These displays are lauded for their high brightness and low energy consumption, making them especially suitable for portable devices or any application where power efficiency is key. The design of the “2 digit 7 segment display” also ensures compatibility with a wide range of devices, offering flexibility in use and simplicity in programming.
Versatile Applications Across Industries
From consumer electronics like digital clocks and calculators to more critical applications in medical devices and industrial control panels, the “1.5 inch 7 segment display” has proven indispensable. Its reliability and ease of readability have made it a favored choice for designers and engineers alike, seeking to enhance user experience without compromising on functionality.
Enhancing Product Design and Usability
For manufacturers and developers, the benefits of incorporating these displays extend beyond their technical specifications. They offer a blend of aesthetic appeal, operational efficiency, and cost-effectiveness that can significantly elevate the marketability and user satisfaction of their products.
Impactful Real-World Applications: Case Studies and Testimonials
The transformative impact of the “1.5 inch 7 segment display” is best illustrated through real-world applications. Case studies reveal its critical role in improving the functionality and reliability of essential equipment, such as emergency response systems and industrial monitors. User testimonials further affirm its superiority in terms of visibility, durability, and overall performance, underscoring its value in a wide range of settings.
Conclusion and Moving Forward
The 1.50 inch dual-digit seven-segment LED display represents a blend of innovation, functionality, and practicality, proving itself as a cornerstone of modern electronic display technology. For the electronics community, embracing these displays means unlocking new possibilities in design and application, pushing the boundaries of what electronic devices can achieve.
For those looking to integrate these advanced displays into their projects, the journey begins with understanding their capabilities and leveraging their advantages. Let’s navigate the future of electronics together, illuminated by the clarity and precision of seven-segment LED displays.
Features
- Digit Height: Each digit is 1.50 inches (approximately 35.0mm) tall, providing clear visibility.
- Overall Dimensions: The display measures 38.0mm in width and 44.0mm in height.
- Low Current Operation: Designed for energy efficiency, reducing power consumption.
- Common Anode and Common Cathode Available: Offers flexibility in circuit design, accommodating different types of electrical configurations.
- Excellent Character Appearance: Clear and distinct character display for easy readability.
- High Light Output: Bright display ensures visibility even in well-lit conditions.
- Easy Mounting On PC Boards or Sockets: Designed for straightforward integration into various electronic systems.
- IC Compatible: Can be easily interfaced with integrated circuits, making it suitable for complex electronic applications.
- Multicolor Available: Provides options for different color displays, enhancing versatility.
- Categorized for Luminous Intensity: Ensures consistency in brightness across units.
- Technically Rugged: Durable and reliable, suitable for various environmental conditions.
- Standard: Gray Surface, White Segment: Offers a classic and clear display appearance.
- RoHS Compliance: Meets environmental and safety standards.
Applications
- Electronic Scoreboards: Suitable for displaying scores in sports events or other competitive activities.
- Digital Clocks and Timers: Ideal for timekeeping applications in various settings, from kitchens to sports arenas.
- Counters and Calculators: Can be used in devices that require numerical display, such as calculators and industrial counters.
- Information Displays: Applicable in public transportation systems, information kiosks, and other public information displays.
- Industrial Control Systems: Suitable for displaying numerical data such as temperature, pressure, or speed in industrial settings.
- Electronic Signs and Billboards: Can be utilized in advertising and public announcement systems for displaying numbers.
- Medical Equipment: Useful in medical devices that display numerical data like heart rate monitors and blood pressure machines.
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-D150A-21B |
BL-D150B-21B |
ultra Blue |
InGaN/SiC |
470 |
4.2 |
35 |
50 |
|
BL-D150A-21D |
BL-D150B-21D |
Super Red |
GaAlAs/DH |
660 |
2.2 |
100 |
140 |
|
BL-D150A-21E |
BL-D150B-21E |
Orange |
GaAsP/GaP |
635 |
2.5 |
40 |
60 |
|
BL-D150A-21G |
BL-D150B-21G |
Green |
GaP/GaP |
570 |
2.5 |
35 |
55 |
|
BL-D150A-21H |
BL-D150B-21H |
Red |
GaP/GaP |
700 |
2.6 |
8 |
12 |
|
BL-D150A-21PG |
BL-D150B-21PG |
Ultra Pure Green |
InGaN/SiC |
525 |
4.2 |
120 |
190 |
|
BL-D150A-21S |
BL-D150B-21S |
Hi Red |
GaAlAs/SH |
660 |
2.2 |
80 |
120 |
|
BL-D150A-21UB |
BL-D150B-21UB |
ultra Blue |
InGaN/SiC |
470 |
4.2 |
60 |
88 |
|
BL-D150A-21UE |
BL-D150B-21UE |
Ultra Orange |
AlGaInP |
630 |
2.5 |
75 |
120 |
|
BL-D150A-21UG |
BL-D150B-21UG |
Ultra Green |
AlGaInP |
574 |
2.5 |
50 |
75 |
|
BL-D150A-21UR |
BL-D150B-21UR |
Ultra Red |
GaAlAs/DDH |
660 |
2.2 |
105 |
160 |
|
BL-D150A-21UY |
BL-D150B-21UY |
Ultra Yellow |
AlGaInP |
590 |
2.5 |
50 |
75 |
|
BL-D150A-21W |
BL-D150B-21W |
Ultra White |
InGaN |
- |
4.2 |
88 |
||
BL-D150A-21Y |
BL-D150B-21Y |
Yellow |
GaAsP/GaP |
585 |
2.5 |
40 |
60 |
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.
