5mm top flat LED diode

Series No:





5 x 5 x 6.8






Understanding the 5mm Top Flat LED Diode

At its core, the 5mm top flat LED diode is known for its distinctive flat-top design, which allows for a wider angle of light distribution compared to its dome-topped counterparts. This makes it an ideal choice for applications requiring a broad, even spread of light. Additionally, these diodes are available in a range of colors, including a specific wavelength like 640nm, making them suitable for various signaling, decorative, and functional purposes.

Features and Applications

The 5mm top flat LED, or flat top LED as it’s commonly known, boasts several features that make it indispensable in modern electronics design. Its compact size, combined with its wide viewing angle, allows for its incorporation into a plethora of devices, from dashboard indicators to backlit displays and everything in between.

Applications of these LEDs are vast, stretching across industries. In the medical field, for instance, the precision and reliability of 5mm LEDs are utilized in diagnostic instruments. Meanwhile, in consumer electronics, these diodes illuminate everything from television remote controls to wearable devices.

The Benefits: Why Industries Prefer 5mm Top Flat LEDs

The advantages of using 5mm top flat LEDs are numerous. Firstly, their energy efficiency is unparalleled, providing substantial cost savings over traditional lighting solutions. Their durability and long lifespan reduce maintenance needs and replacement costs, a vital consideration for any application. Moreover, the ability to produce light in a specific wavelength, such as 640nm, makes them highly sought after for tasks requiring precision and specificity.

Case Studies: A Closer Look at Success Stories

One compelling case study involves a leading automotive manufacturer that integrated 5mm top flat LED diodes into its vehicle dashboard designs. This move not only enhanced the aesthetic appeal of the dashboards but also improved visibility and user experience, leading to increased customer satisfaction and sales.

Another example comes from the field of consumer electronics, where a well-known brand utilized these diodes in its latest range of portable speakers. The incorporation of LED emitters enhanced the product’s design and functionality, setting new standards for the industry.

User Testimonials: Voices from the Field

Feedback from engineers and purchasers underscores the transformative impact of these LEDs. One electronics engineer praised the 5mm LEDs for their reliability and performance, stating, “The flat top design has allowed us to innovate in ways we hadn’t imagined, elevating our products to the next level.”

A purchaser for a major electronics manufacturer commented on the cost-effectiveness, noting, “Not only have we seen a reduction in our overall production costs, but the energy efficiency of these LEDs has also been a selling point for our environmentally conscious customers.”

Conclusion: Lighting the Path to Innovation

The 5mm top flat LED diode exemplifies how small components can drive significant advancements in technology and design. Its features, applications, and benefits showcase its versatility and efficiency, making it a favored choice among professionals in the electronics industry. As we continue to explore its potential, the 5mm top flat LED diode is undoubtedly lighting the way forward, promising a brighter, more innovative future in electronics.

End with a Call to Action: Ready to illuminate your projects with efficiency and innovation? Explore our range of 5mm top flat LED diodes today and see how they can transform your electronics designs.

5mm top flat LED diode
5mm top flat LED diode


  • 5mm Cylindrical LED Lamp with Top Flat Design: This LED features a unique cylindrical shape with a flat top, which affects the dispersion of light, providing a distinct visual profile.
  • Choice of Various Viewing Angles: Available in different viewing angles, this feature allows for flexibility in light direction and application, ensuring optimal visibility as required.
  • Lens Options: Comes with a variety of lens types – diffused (for a softer, more spread-out light), transparent (for clear, direct light), and water clear (for the brightest, most straightforward light).
  • IC Compatible / Low Current Capability: Designed to be compatible with integrated circuits (ICs) and to operate efficiently on low current, making them suitable for energy-sensitive applications.
  • RoHS Compliance: The LEDs are manufactured in compliance with the Restriction of Hazardous Substances directive, ensuring they are environmentally friendly and safe for use.


  • Indicator Lights: Suitable for use as indicator lights in electronic devices, appliances, and machinery, where the top flat design can offer a unique visual and lighting effect.
  • Decorative Lighting: Ideal for decorative applications in architectural lighting, interior design, or artistic installations, where the unique shape can contribute to the aesthetic.
  • Automotive Lighting: Appropriate for use in automotive applications, particularly for dashboard and control panel indicators, where the flat top can provide distinct illumination.
  • Consumer Electronics: Can be used in personal electronic devices for status indicators or design enhancements, especially where a distinctive lighting pattern is preferred.
  • Safety and Warning Signals: Suitable for use in safety signs, emergency lighting systems, and warning signals, where high visibility and a unique light pattern are beneficial.
  • Entertainment and Stage Lighting: Perfect for creating special lighting effects in entertainment and stage lighting setups.
  • Educational and DIY Projects: Often used in DIY electronics and educational projects due to their unique design and versatility.
  • General Lighting Applications: Can be employed in various general lighting applications where the flat top design offers a specific advantage in light dispersion.

RoHs Compliance, Pb-free              Anti-Static Attention

Electrical-optical characteristics:
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Package configuration & Internal circuit diagram
5mm top flat 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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