4.8mm straw hat LED diode,bicolor, bi-polar LED, 3 leads

Through hole LED

Series No:

bl-l4819

Weight:(g/pcs)

0.22

Dimension:(mm)

4.8 x 5.8 x 4.8

Package:

Specification:

Inquiry

Description:

4.8mm Straw Hat Bi-Color LED Diode (3 Leads) – High-Efficiency, Wide-Angle Indicator LED

The 4.8mm straw hat LED diode, bi-color, bi-polar LED with 3 leads is a compact yet high-performance light-emitting component designed for applications requiring clear, dual-color visual indication with exceptional brightness and wide viewing angles. This unique straw-hat lens structure provides enhanced light diffusion, making it an ideal choice for indicator modules, display panels, signal devices, and modern compact electronic products.

With 3-lead configuration, this bi-color LED supports both independent color activation and mixed-color output, making it widely used in user interfaces, instrumentation, communications equipment, household appliances, and custom electronics.


Key Features

✔ 4.8mm Straw Hat Lens for Wide Dispersion

The straw-hat lens design is engineered to deliver a super-wide viewing angle, ensuring uniform illumination across a large field of view. This makes it highly effective for dashboards, signal indicators, and products requiring visibility from multiple directions.

✔ Bi-Color, 3-Lead Configuration

The LED integrates two chips in a single package, offering:

  • Two independent color states

  • Mixed-color output

  • Shared common lead for simplified circuit design

It is suitable for warning indicators, multi-status displays, and panel-mounted signaling.

✔ Bi-Polar LED Operation

The bi-polar structure allows:

  • Color A for one polarity

  • Color B for reversed polarity

This eliminates the need for complex circuits and enables intuitive electrical signaling.

✔ High Brightness & Energy Efficiency

Using advanced semiconductor materials such as:

  • InGaN for blue/green options

  • GaAsP for red/yellow options

The LED provides strong illumination with low power consumption.

✔ Multiple Lens Options

Available in:

  • Transparent

  • Water clear

  • Diffused

Each lens type offers different optical performance depending on the user’s needs.

✔ Long-Life, Stable Output

The LED diode is manufactured with long-lasting chips, ensuring:

  • Minimal optical decay

  • Stable brightness

  • Reliable color consistency

✔ RoHS Compliant

Free from hazardous materials and environmentally safe.


Applications

This 4.8mm straw hat bi-color LED diode (3 leads) is suitable for a wide variety of industries and devices, including:

✔ Instrumentation & Control Panels

Ideal for multi-status indication such as:

  • Power ON/OFF

  • Warning/fault alerts

  • Mode display

✔ Communication Equipment

Routers, switches, servers, radios, and signal devices.

✔ Consumer Electronics

Used in:

  • Smart appliances

  • Audio equipment

  • Remote controls

  • Gaming accessories

✔ Automotive & Transportation

Dashboard indicators, motorcycle meters, signal clusters.

✔ Industrial Equipment

Factory machines, automation systems, control cabinets.

✔ Toy, Hobby & DIY Projects

Perfect for:

  • Model lighting

  • DIY electronics

  • Educational projects

✔ Decorative & Ambient Lighting Effects

Dual-color output enables simple, low-power dynamic effects.


Available Color Combinations (Summary)

This 4.8mm bi-color LED supports multiple chip combinations, including but not limited to:

  • Red + Green

  • Red + Yellow

  • Red + Blue

  • Yellow + Green

  • Blue + Green

  • Custom mixed-color options available

Different brightness levels and forward voltages are available depending on color choice, with typical viewing angle of 60° for straw-hat optics.


Benefits & Advantages

1. Wide Viewing Angle

Straw-hat structure ensures visible signals from multiple directions, improving user experience.

2. Dual-Color Versatility

Provides two signaling conditions in a single LED, reducing PCB space and cost.

3. Easy Integration

Pre-formed leads allow fast assembly, stable PCB mounting, and straightforward wiring.

4. Durable & Long-Life

High-quality LED chips maintain optical performance over extended use.

5. Energy Efficient

Operates efficiently at low current, suitable for battery-powered and embedded devices.


User Testimonials

✔ Electronics Engineer – USA
“The 4.8mm straw hat bi-color LED has been our go-to for handheld devices. The brightness is strong even in open environments.”

✔ Industrial Control Designer – UK
“We use this LED in our compact control consoles. The dual-color function saves PCB space and simplifies the UI design.”

✔ DIY Electronics Creator – Germany
“Wide viewing angle and clear dual colors—great for educational kits and small projects.”


Conclusion

The 4.8mm straw hat bi-color LED diode (3 leads) is an optimal choice for engineers and manufacturers seeking reliable, bright, and versatile indicator lighting. Its wide viewing angle, long service life, and dual-color signaling make it an essential component for modern electronic products.

If you need consistent performance, excellent visibility, and flexible color combinations, this LED delivers outstanding value.

RoHs Compliance, Pb-free              Anti-Static Attention

Electrical-optical characteristics:
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More information, Contact us at sales@betlux.com
Package configuration & Internal circuit diagram

Obtain 3D specification files


downloadInitial Graphics Exchange Specification (.IGS)
downloadStandard 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.

4.8mm straw hat LED diode,bicolor, bi-polar LED, 3 leads


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:

CodeDTCWE 
Meaningcolor DiffusedColor TintedWater ClearWater DiffusedOrange diffused 

Absolute maximum ratings (Ta=25°C)

ParameterSRLRURUEUYUGPGBGBUBUVWUnit
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

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 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

 product.

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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