4.8mm Bullet LED diode

Series No:





4.8 x 5.8 x 4.8







The 4.8mm Bullet LED, with its distinctive size and shape, has become a staple in the electronics industry, known for its wide beam angle and uniform light distribution. Often referred to as straw hat LEDs due to their appearance, these components are celebrated for their compact size and led cool white illumination, making them highly sought after in various applications. From consumer electronics to industrial equipment, the adaptability of 4.8mm LEDs is unparalleled. This article delves into their world, exploring every facet to give a comprehensive understanding of their potential.

Features of 4.8mm Bullet LED Diodes

The 4.8mm Bullet LEDs stand out for several key features:

  • Wide Beam Angle: Offering a broad distribution of light, ideal for applications requiring uniform illumination.
  • High Efficiency: Known for their low power consumption while providing bright, led cool white light.
  • Durability: These LEDs are built to last, withstanding rigorous conditions without compromising performance.
  • Versatility: Suitable for a variety of uses, from decorative lighting to more functional roles in electronic devices.

Applications Across Industries

The flexibility of 4.8mm Bullet LEDs allows them to shine in multiple sectors:

  • Consumer Electronics: Enhancing products with their aesthetic and functional light.
  • Automotive: Used in dashboard lighting and exterior signals for their reliability and brightness.
  • Signage and Displays: Their wide beam angle makes them perfect for creating impactful and visible messages.
  • Industrial Equipment: Serving as indicators and illuminators, ensuring safety and efficiency in operations.

The integration of these bullet LEDs into diverse projects highlights their adaptability and utility in the modern electronic landscape.

The Benefits Unveiled

Adopting 4.8mm Bullet LEDs into projects brings several advantages:

  1. Energy Savings: Their efficiency translates into reduced operational costs and a greener footprint.
  2. Enhanced Design Flexibility: The compact size and unique shape open up new design possibilities.
  3. Improved Product Performance: Offering bright, uniform lighting enhances the functionality and appeal of products.
  4. Sustainability: With a longer lifespan, these LEDs contribute to less waste and frequent replacements.

Case Studies: A Brighter World

Through real-world applications, we see the transformative impact of 4.8mm Bullet LEDs. This section showcases how businesses and designers have leveraged these components to enhance their products and solutions, demonstrating the practical benefits and innovative uses in various industries.

User Testimonials: Lighting the Path Forward

Hearing from those who have firsthand experience with integrating 4.8mm Bullet LEDs into their projects offers invaluable insights. This segment compiles feedback from engineers, purchasers, and administrators, providing perspectives on the utility, efficiency, and innovation these LEDs bring to the table.

Conclusion: Shaping the Future with 4.8mm Bullet LEDs

As technology progresses, the role of 4.8mm Bullet LEDs in advancing electronic design and functionality continues to grow. Their unique combination of features, benefits, and applications positions them as key components in the future of electronics. Whether for enhancing aesthetic appeal or improving product performance, these LEDs offer a versatile and efficient solution.

Call to Action: Embrace the illumination revolution. Incorporate 4.8mm Bullet LEDs into your next project to unlock new levels of efficiency, design, and innovation.

4.8mm Bullet LED diode
4.8mm Bullet LED diode


  • 4.8mm Round-Helmet Type LED Lamp: This unique design, resembling a helmet, provides a specific aesthetic and functional advantage in various applications.
  • Ultra Brightness: These LEDs are designed to emit a high level of brightness, making them highly visible even in well-lit conditions.
  • Various Viewing Angles: Available in different viewing angles to cater to specific requirements, enhancing visibility in diverse applications.
  • Lens Options: Offered with diffused, transparent, and water-clear lenses. The diffused lens provides a softer light spread, transparent for sharper light output, and water-clear for the most direct and concentrated light.
  • IC Compatible / Low Current Capability: Can be easily integrated with integrated circuits, suitable for complex electronic designs. The low current requirement enhances energy efficiency, making them ideal for battery-powered and energy-saving applications.
  • RoHS Compliance: These LED lamps meet the strict standards set by the Restriction of Hazardous Substances Directive, ensuring they are environmentally friendly and safe for use in various applications.


  • Indicator Lights: Commonly used in electronic devices, appliances, and control panels as indicators for power, operational states, or warnings.
  • Automotive Lighting: Suitable for various automotive applications, including dashboard lighting, signal lights, and decorative interior lighting.
  • Consumer Electronics: Integrated into consumer electronics for status indicators or backlighting in devices like remote controls, audio equipment, and more.
  • Signal and Signage Applications: Employed in digital billboards, traffic signals, and signage for their high visibility and durability.
  • Decorative Lighting: Used in decorative and accent lighting solutions in commercial and residential settings.
  • Safety and Emergency Equipment: Ideal for safety signs, emergency lighting, and other applications where high visibility is crucial.
  • Toys and Novelty Items: Incorporated in toys and novelty items for their bright illumination and distinctive appearance.
  • Electronic Displays: Used in electronic displays for clear and bright visual output.

RoHs Compliance, Pb-free              Anti-Static Attention

Electrical-optical characteristics:
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Package configuration & Internal circuit diagram
4.8mm Bullet  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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