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Description:
“Precision and Brightness: The Advanced Performance of LED 3528 SMD Diode with Dome Lens”
Introduction
In the dynamic field of electronic lighting, LED 3528 diodes continue to set the standard for compact, reliable, and high-performance illumination. Known for their efficiency and versatility, these diodes have become indispensable across industries — from consumer electronics to automotive and industrial lighting. The 3528 SMD LED diode with a dome lens takes this performance further by offering enhanced light distribution and higher luminous intensity, making it the ideal choice for designers seeking precision and durability.
Also known as a PLCC 2 LED, the LED 3528 is a surface mount LED component, designed to provide stable, energy-efficient light output in a small 3.5mm × 2.8mm package. Its unique dome lens structure amplifies brightness and focuses light more effectively, offering a consistent and vivid display performance. The SMD 3528 LED is widely appreciated for its longevity, cost-effectiveness, and compatibility with automated assembly systems — features that align perfectly with modern electronics manufacturing requirements.
Features of the LED 3528 Dome Lens Diode
The LED 3528 integrates advanced optical and structural engineering for superior illumination and reliability. Here are its key performance characteristics:
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Compact Design (3.5 × 2.8 mm):
The PLCC 2 LED is perfectly suited for small-scale applications where space is limited but brightness cannot be compromised. -
Dome Lens for Enhanced Light Output:
The 3528 SMD LED incorporates a precision dome lens that increases brightness intensity and improves beam uniformity, allowing better directional control. -
High Efficiency and Brightness:
Delivers strong light output while maintaining low power consumption, ensuring long-term cost savings. -
Excellent Heat Dissipation:
Its surface mount LED structure ensures efficient thermal management, which prolongs the diode’s lifespan and stability. -
Durable Epoxy Resin Housing:
Resistant to vibration, moisture, and environmental stress, ensuring dependable operation in industrial or outdoor applications. -
Wide Viewing Angle:
The dome lens offers uniform brightness distribution over a wide angle, making it perfect for backlighting, indicators, and signage. -
Multiple Color Options:
Available in various colors — white, red, green, blue, and amber — allowing flexibility for different applications. -
Long Lifespan:
Engineered for 50,000+ operational hours, the SMD 3528 LED provides consistent illumination over years of use.
Applications of LED 3528 SMD Dome Lens Diodes
The LED 3528 finds widespread applications across multiple industries, thanks to its adaptability, luminous performance, and compact footprint.
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Consumer Electronics:
Used in backlit displays, keypads, and control panels. The PLCC 2 LED ensures bright and consistent illumination while keeping device profiles slim. -
Automotive Lighting:
Ideal for dashboards, ambient lighting, and indicator systems. The SMD 3528 LED dome lens offers better light focus and uniformity, improving readability and aesthetics. -
Architectural and Decorative Lighting:
Perfect for linear light strips, signage, and decorative illumination, delivering vibrant colors and a polished appearance. -
Industrial Equipment:
Serves as status indicators and machine panel lights. Its robust surface mount LED design ensures long-term reliability even in harsh environments. -
Medical Devices and Instruments:
Used in compact diagnostic equipment and control displays for precise, stable illumination. -
Commercial Displays and Signage:
The 3528 dome LED provides uniform brightness across advertising panels and information boards. -
IoT and Smart Devices:
Compact yet powerful, the LED 3528 is integrated into smart systems and wearable devices for efficient light indication and status feedback.
Benefits of LED 3528 Dome Lens Technology
The LED 3528 offers numerous advantages that make it a favorite among engineers, manufacturers, and designers.
-
Superior Light Control:
The dome lens enhances luminous output, improving visibility while maintaining uniform beam spread. -
Compact Yet Bright:
The PLCC 2 LED provides high brightness in a small package, ideal for miniaturized electronics and high-density circuit boards. -
Efficient Energy Usage:
As a surface mount LED, it consumes minimal power while offering strong light intensity, ensuring sustainable energy use. -
Enhanced Durability:
Resistant to vibration and environmental stress, the SMD 3528 LED ensures stable performance in industrial and automotive environments. -
Longevity and Stability:
Delivers consistent brightness and color even after extended operation, reducing maintenance and replacement needs. -
Cost-Effective Production:
The LED 3528 supports automated pick-and-place assembly, improving production efficiency and reducing overall manufacturing costs. -
Eco-Friendly Design:
Free from mercury and other hazardous materials, this diode complies with RoHS standards, supporting green manufacturing initiatives.
Case Studies: Practical Implementations
Case Study 1 – Automotive Interior Illumination (Germany):
An automotive manufacturer incorporated the LED 3528 into dashboard controls and accent lighting systems. The dome lens provided increased light focus, improving display clarity under both daylight and night conditions. The result was a 30% increase in brightness and a 25% reduction in energy consumption compared to previous models.
Case Study 2 – Architectural Light Strips (USA):
A lighting design firm integrated SMD 3528 LED diodes into flexible architectural strips. The surface mount LED technology allowed for precise placement, while the dome lens achieved even brightness across installations. Customer satisfaction improved significantly due to enhanced lighting aesthetics and low energy usage.
Case Study 3 – Consumer Electronics Panels (Japan):
A major electronics company utilized the PLCC 2 LED in remote control and display backlighting applications. The dome lens provided exceptional brightness with minimal power draw, extending product lifespan and improving user interface visibility.
User Testimonials
Emily Carter, Senior Engineer (USA):
“The LED 3528 delivers consistent illumination in our control modules. Its dome lens design makes a noticeable difference in brightness and light quality.”
Kenji Sato, Product Developer (Japan):
“We’ve integrated SMD 3528 LEDs across our product lines. They’re reliable, bright, and compatible with our automated assembly lines, saving us time and cost.”
David Lee, Lighting System Designer (UK):
“The PLCC 2 LED is our preferred choice for decorative strips and signage. It provides superior uniformity and energy efficiency.”
Conclusion
The 3528 SMD LED diode with dome lens exemplifies the innovation driving today’s lighting technology. Its compact size, efficient surface mount LED design, and enhanced brightness make it a versatile component for engineers and product designers.
The LED 3528 combines durability, performance, and precision in one package, while the PLCC 2 LED structure ensures superior reliability in high-demand environments. The dome lens enhances visual impact, providing brilliant illumination for automotive, industrial, and architectural applications alike.
Whether you’re developing next-generation electronics or high-end lighting systems, the SMD 3528 LED is the optimal choice for consistent brightness, energy efficiency, and design flexibility.
Features
- 3.5mm x 2.8mm SMD, 3.5mm Thickness, PLCC2 Package: This Surface-Mount Device (SMD) LED is compact, making it suitable for high-density mounting on circuit boards. Its PLCC2 (Plastic Leaded Chip Carrier) package ensures robustness and reliability.
- Mono-Color Type with Ultra Brightness: Provides a single-color light output with high luminosity, ensuring clear visibility and strong illumination.
- Compatible with Automatic Placement Equipment: Designed for seamless integration with automated assembly systems, enabling efficient, high-speed placement and soldering on circuit boards.
- Wide Viewing Angle: Offers a broad range of visibility, making the LED effective for applications where it needs to be seen from different angles.
- Ideal for Backlight and Indicator: Well-suited for use as a backlight in display panels or as an indicator light in various electronic devices.
- Packaged 2,000 Pieces per Reel: Supplied in reels of 2,000 pieces, facilitating bulk handling and automated assembly processes.
- RoHS Compliance: Manufactured in accordance with the Restriction of Hazardous Substances directive, ensuring environmentally safer production and use.
Applications
- Backlighting in Displays: Suitable for backlighting LCDs, control panels, and keypads in various electronic devices.
- Indicator Lights in Electronics: Ideal for use as status or warning lights in consumer electronics, industrial machinery, and automotive applications.
- Automotive Lighting: Appropriate for interior and exterior lighting solutions in vehicles, including dashboard lights, accent lighting, and external signal lights.
- Portable Electronics: Given its small size and brightness, it’s well-suited for use in portable devices like smartphones, tablets, and wearable technology.
- Control Panels: Useful in control panels for machinery and industrial equipment, providing clear indication and backlighting.
- Medical Devices: Can be employed in various medical instruments for backlighting and status indicators, where reliability and clear visibility are essential.
- Decorative and Architectural Lighting: Suitable for decorative lighting in interior design, architectural projects, and ambient lighting setups.
- Safety and Emergency Equipment: Applicable in safety gear and emergency lighting due to its high visibility and compact design.
Electrical-optical characteristics:
Package configuration & Internal circuit diagram
Obtain 3D specification files
Initial Graphics Exchange Specification (.IGS)Standard for the Exchange of Product Model Data (.STEP)To examine all 3D specifications, save the files to your local drive and open them with your 3D application.
Lens colors in 3D files are solely for visual representation; consult the Datasheet for accurate lens type and color information.
In the event of a mismatch, the dimensions in the datasheet take precedence over the 3D specifications.
All dimensions are in millimeters(inches)
Tolerance is +-0.25(0.01″) unless otherwise note
Specifications are subject to change without notice.
Partno description:
LEDs, Light Emitting diodes, which include various small kinds, such as 3mm, 5mm, 8mm, 10mm; round type, rectangular type square type, tower type, Oval led, elliptical, flat top; SMDs, high power led, piranha LEDs
More Information
Lens Color:
| Code | D | T | C | W | E | |
| Meaning | color Diffused | Color Tinted | Water Clear | Water Diffused | Orange diffused |
Absolute maximum ratings (Ta=25°C)
| Parameter | SR | LR | UR | UE | UY | UG | PG | BG | B | UB | UV | W | Unit |
| Forward Current I F | 25 | 25 | 25 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | mA |
| Power Dissipation P d | 60 | 60 | 60 | 65 | 65 | 75 | 110 | 110 | 120 | 120 | 120 | 120 | mW |
| Reverse Voltage V R | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | V |
| Peak Forward Current I PF (Duty 1/10 @1KHZ) | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 100 | 100 | 100 | 100 | 100 | mA |
| Operation Temperature T OPR | -40 to +80 | °C | |||||||||||
| Storage Temperature T STG | -40 to +85 | °C | |||||||||||
| Lead Soldering Temperature T SOL | Max.260+-5°C for 3 sec Max. (1.6mm from the base of the epoxy bulb) | °C | |||||||||||
Related Information
Applied for:
The LEDs described here are intended to be used for ordinary electronic equipment (such as office equipment,
communication equipment and household applications). Consult 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).
CAUTIONS for Through-Hole LED Lamps
1. Application
The LEDs described here are intended to be used for ordinary electronic equipment (such as office equipment, communication equipment and household applications). Consult 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 LEDs should not exceed 30℃ temperature or 70% relative humidity. It is
recommended that LEDs out of their original packaging are used within three months
For extended storage out of their original packaging, it is recommended that the LEDs be stored in a sealed
container with appropriate desiccant or in a desiccator with nitrogen ambient.
3. Cleaning
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED if necessary
4. Lead Forming & Assembly
During lead forming, the leads should be bent at a point at least 3mm from the base of LED lens. Do not use
the base of the leadframe as a fulcrum during forming.
Lead forming must be done before soldering, at normal temperature.
During assembly on PCB, use minimum clinch force possible to avoid excessive mechanical stress.
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.
Drive Method
An LED is a current-operated device. In order to ensure intensity uniformity on multiple LEDs connected in
parallel in an application, it is recommended that a current limiting resistor be incorporated in the drive circuit,
in series with each LED as shown in Circuit A below.
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.
