3535 SMD led diode

Series No:




3.5 x 3.5 x 1.15


SMD 3535





Exploring the Versatility of 3535 SMD LED Diodes: A Lighting Innovation

In the dynamic world of electronics, the 3535 SMD LED diode stands out as a robust and versatile component, crucial for numerous applications in modern lighting and display technology. Known for its substantial power and compact size, the 3535 LED is a popular choice among electronics manufacturers and engineers. This comprehensive article delves into the features, applications, and numerous benefits of the 3535 SMD LED, enriched with real-world case studies and testimonials.

Defining Features of the 3535 SMD LED Diode

The 3535 SMD LED diode, often compared to the slightly larger SMD 5050, excels in delivering high brightness and efficiency in a compact package. Its design is optimized for high-output performance with minimal energy consumption, making it ideal for both general and specialized lighting applications. These LEDs are capable of emitting a broad spectrum of colors, including whites and RGB, which makes them exceptionally useful in a variety of settings.

Wide-Ranging Applications of 3535 LEDs

3535 SMD LEDs are utilized in various sectors due to their versatility:

  • General Lighting: Employed in residential and commercial lighting for their high luminosity and durability.
  • Automotive Lighting: Integral in headlights, tail lights, and interior lighting, where reliability and intensity are paramount.
  • Backlighting for Displays: Used in TVs, smartphones, and other devices, enhancing color and brightness.
  • Outdoor Displays: Powers large screens and billboards with their ability to operate effectively in different environmental conditions.

Advantages of Employing 3535 SMD LEDs

Incorporating 3535 SMD LEDs into lighting solutions offers significant benefits:

  • Energy Efficiency: These LEDs provide exceptional luminosity while maintaining low power consumption, reducing energy costs.
  • Compact Design: Their small footprint allows for greater flexibility in design and application, ideal for space-constrained environments.
  • Longevity and Reliability: 3535 LEDs are known for their durability, which translates into reduced maintenance costs and longer service life.

Case Studies: 3535 LEDs in Action

A notable case study involves a tech company that integrated 3535 SMD LEDs into their new line of consumer electronics. The adoption of these LEDs significantly enhanced the product’s functionality and appeal, leading to a noticeable increase in market share. Another case from the automotive sector shows how the implementation of 3535 LEDs in vehicle lighting systems improved visibility and energy efficiency, contributing to enhanced vehicle safety and design.

User Testimonials: Positive Feedback from the Field

Feedback from users and industry professionals consistently praises the 3535 SMD LED for its performance and adaptability. A senior product manager at a leading lighting company mentioned, “The 3535 LED technology has allowed us to push the limits of our product designs, achieving higher brightness and better efficiency than ever before.”

The Future Potential of 3535 SMD LED Technology

With ongoing advancements in LED technology, 3535 SMD LEDs are set to play a crucial role in future developments, particularly in smart lighting systems and IoT-enabled devices. Their ability to integrate seamlessly into various electronic platforms opens up new possibilities for innovation in both commercial and industrial applications.

Conclusion: The Bright Choice for Advanced Lighting Needs

The 3535 SMD LED diode exemplifies cutting-edge lighting technology with its efficiency, versatility, and powerful output. For electronics manufacturers, engineers, and purchasers looking to enhance their products and systems with reliable, high-performance lighting solutions, the 3535 LED offers a compelling choice. Embrace the capabilities of these advanced LEDs to stay ahead in the competitive electronics landscape.

3535 SMD led diode
3535 SMD led diode


  • 3.5mm x 3.5mm SMD, 1.15mm Thickness, PLCC2 Package: This Surface-Mount Device (SMD) LED is compact, with a square shape and thin profile, housed in a PLCC2 (Plastic Leaded Chip Carrier) package, suitable for various applications where space is at a premium.
  • 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 compatibility with automated assembly systems, allowing for 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: Perfectly suited for use as a backlight in display panels or as an indicator light in various electronic devices.
  • Packaged 2,000 Pieces per Reel: The LEDs are supplied in bulk, with 2,000 pieces per reel, optimizing manufacturing efficiency and ease of bulk handling.
  • RoHS Compliance: Manufactured in accordance with the Restriction of Hazardous Substances directive, ensuring environmentally safer production and use.


  • Backlighting in Electronics: Ideal for backlighting displays in smartphones, tablets, laptops, and other personal electronic devices where space is limited.
  • Indicator Lights in Appliances: Suitable for use as status or signal indicators in household and commercial appliances.
  • Automotive Interior Lighting: Can be used for dashboard backlighting, control buttons, and indicator lights in vehicles.
  • Portable Electronics: Given its small size, it’s well-suited for compact devices like wearables and handheld gadgets.
  • Control Panels and Instrumentation: Useful in industrial and laboratory equipment for backlighting and status indication.
  • Medical Devices: Appropriate for backlighting and indicators in various medical instruments where reliability and clear visibility are essential.
  • Safety and Emergency Equipment: Can be employed in safety gear and emergency lighting systems due to its high visibility and compact size.
  • Decorative and Ambient Lighting: Suitable for creating mood lighting in interior design and architectural projects.

RoHs Compliance, Pb-free              Anti-Static Attention

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Package configuration & Internal circuit diagram
3535 SMD led diode

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

Part No of  LED diode

More Information

Lens Color:

Meaningcolor DiffusedColor TintedWater ClearWater DiffusedOrange diffused 

Absolute maximum ratings (Ta=25°C)

Forward Current I F252525303030303030303030mA
Power Dissipation P d606060656575110110120120120120mW
Reverse Voltage V R555555555555V
Peak Forward Current I PF (Duty 1/10 @1KHZ)150150150150150150150100100100100100mA
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:
auto lampcameradome lightrgb screentraffic light


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.

led diode formingassembly notice of led diode


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 SolderingSoldering Iron
Pre-Heat150-180°CPre-Heat100°C Max.Temperature300°C Max.
Pre-Heat Time120sec Max.Pre-Heat Time60sec Max.
Peak Temperature260°C Max.SolderWave260°C Max.Soldering Time3sec Max.(one time only)
Soldering Time10 sec Max.Soldering Time5sec 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


antistatic notice-smd led

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.

drive notice - led diode

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.
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