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In the event of a mismatch, the dimensions in the datasheet take precedence over the 3D specifications.
“Precision Illumination: The 3528 SMD LED Diode with Dome Lens Technology”
Introduction
In the modern lighting industry, LED 3528 diodes represent one of the most trusted and versatile components in electronic illumination systems. Known for their compact design, energy efficiency, and high brightness, these LEDs continue to play a crucial role in display backlighting, indicator systems, and architectural lighting. The 3528 SMD LED diode equipped with a dome lens further enhances optical output and uniformity, offering precise light distribution for both professional and consumer-grade applications.
The LED 3528 model—also known as PLCC 2 LED—is a surface-mount technology (SMT) component that has become a mainstay in PCB-mounted lighting assemblies. The 3528 dome LED design combines durability, superior color consistency, and customizable brightness levels, making it ideal for engineers, designers, and OEM manufacturers who prioritize both performance and longevity.
Features of the 3528 SMD LED Diode Dome Lens
The LED 3528 with dome lens is built on a compact 3.5mm × 2.8mm footprint, providing optimal brightness in limited space. The PLCC 2 LED package design enhances mechanical stability and thermal efficiency, ensuring consistent light output under various conditions.
Key Features:
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Compact and Efficient Design:
With a small 3.5 × 2.8 mm size, the SMD 3528 fits into tight spaces while providing strong illumination performance. -
Dome Lens Technology:
The 3528 dome LED features an integrated lens that concentrates light output, improving directional intensity and uniformity. -
High Luminous Efficacy:
Produces brilliant and stable light, offering superior performance compared to standard flat-top LED designs. -
Wide Viewing Angle:
The dome lens broadens the emission field, ensuring consistent brightness across different viewing angles. -
Reliable Thermal Management:
Constructed with high-quality materials and a thermally stable LED holder, the LED 3528 operates efficiently without overheating. -
Long Operating Life:
Rated for up to 50,000 hours of operation, the diode ensures long-term reliability in demanding environments. -
Flexible Mounting Options:
Compatible with automated pick-and-place assembly systems for mass production efficiency.
Applications of 3528 SMD LEDs
The LED 3528 diode with dome lens is utilized across a wide array of industries due to its balance between performance, efficiency, and design flexibility. Its small size and focused light output make it suitable for intricate electronic and lighting applications.
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Consumer Electronics:
Found in displays, keypads, and indicator lights, the PLCC 2 LED provides uniform backlighting for control panels and remote devices. -
Architectural Lighting:
The 3528 dome LED offers precise beam direction, making it ideal for accent lighting, decorative strips, and display cabinets. -
Automotive Industry:
Used in dashboards, button illumination, and ambient interior lighting systems where reliability and uniform brightness are critical. -
Industrial Equipment:
In control panels and signal indicators, the LED 3528 delivers clear and durable performance under high-vibration and high-temperature environments. -
Medical and Laboratory Devices:
Its consistent color tone and intensity make it suitable for medical instruments, providing precise illumination in diagnostic equipment. -
Advertising and Display Signage:
The 3528 dome LED is commonly used in LED holders within modular signage systems, offering excellent brightness and viewing uniformity.
Benefits of Using the 3528 SMD Dome Lens LED
The LED 3528 diode brings a host of advantages that make it one of the most sought-after components in both small- and large-scale lighting projects.
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Enhanced Light Focus:
The dome lens focuses emitted light, improving intensity and reducing energy loss compared to flat LEDs. -
Compact Yet Powerful:
Despite its small size, the PLCC 2 LED delivers impressive luminous output, suitable for compact products and tight circuit designs. -
Superior Heat Resistance:
With improved materials and efficient heat transfer through the LED holder, it maintains performance over long operation cycles. -
Cost Efficiency:
The SMD 3528 package offers a great balance of price and quality, allowing affordable scalability in mass production. -
Consistent Color Rendering:
Maintains stable chromaticity across all diodes, ensuring uniform light color for display and illumination systems. -
Eco-Friendly Design:
Free from mercury and lead, the 3528 dome LED supports RoHS compliance and sustainable manufacturing practices.
Case Studies: Real-World Applications
Case Study 1 – Automotive Interior Lighting (Germany)
A leading car manufacturer integrated LED 3528 diodes into their dashboard and control panel lighting. The dome lens provided concentrated light distribution, reducing glare and improving visibility. The result was enhanced driver comfort and a 30% reduction in power consumption compared to older lighting modules.
Case Study 2 – Architectural Display Projects (USA)
An architectural lighting firm utilized 3528 dome LEDs in gallery display cases and ceiling accents. The compact form and consistent illumination allowed precise beam control, leading to improved lighting aesthetics and reduced maintenance requirements.
Case Study 3 – Consumer Electronics Backlight System (Japan)
A well-known electronics brand adopted PLCC 2 LEDs for remote control backlighting. The dome lens produced bright, uniform illumination, improving user experience and extending product life by over 40%.
User Testimonials
Michael Rivera, Senior Product Engineer (USA):
“The LED 3528 has been our go-to diode for compact designs. Its reliability, brightness, and lens focus make it perfect for precision lighting systems.”
Li Mei, Purchasing Director (China):
“We use 3528 dome LEDs across multiple product lines. They provide consistent quality, easy PCB integration, and long operational life.”
David Clark, Industrial Designer (UK):
“The PLCC 2 LED model’s balance of size and efficiency is outstanding. The dome lens helps achieve excellent directional lighting in our control panels.”
Conclusion
The 3528 SMD LED diode with dome lens is a powerful, efficient, and compact lighting solution that stands as a benchmark for precision and reliability. Offering strong brightness, excellent heat management, and versatile integration options, the LED 3528 meets the needs of engineers and manufacturers seeking dependable illumination solutions.
From industrial machinery to architectural displays, the PLCC 2 LED ensures consistent performance and color stability across applications. The dome lens further enhances light control and brightness, while the durable LED holder structure guarantees long-term reliability.
As industries move toward smaller, smarter, and more energy-efficient designs, the 3528 dome LED continues to shine as the trusted choice for professionals who value quality and performance in every diode.

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.



