1X3X4mm Rectangular Type LED Lamps

1X3X4mm Rectangular Type LED Lamps

Through hole LED

Series No:

BL-L134

Weight:(g/pcs)

0.17

Dimension:(mm)

3 x 1 x 4

Package:

Specification:

downloadDatasheet

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Description:

🔶 1×3×4mm Rectangular Type LED Lamps — Ultra-Compact, High-Precision Light Solutions

The 1×3×4mm rectangular type LED lamp is a miniature, high-efficiency lighting component engineered for applications where space is extremely limited yet reliable visual indication is required. Its slim rectangular housing—only 1mm thick, 3mm wide, and 4mm tall—offers outstanding PCB compatibility, precise beam control, and versatile placement in compact electronic devices.

These LEDs are widely adopted in consumer electronics, instrumentation, telecom equipment, portable devices, and custom indicator arrays, thanks to their balanced brightness, energy efficiency, and long operational lifespan. The rectangular shape provides directional lighting that round LEDs cannot achieve, making them ideal for tight layouts and narrow window indicators.

✨ Key Features of 1×3×4mm Rectangular LED Lamps

1. Ultra-Miniature Rectangular Package

  • Slim 1mm thickness for ultra-compact integration

  • 3×4mm face for clean, narrow illumination windows

  • Suitable for high-density PCB installations

2. Directional, Focused Light Emission

The rectangular lens shape allows:

  • Clear and concentrated light output

  • Minimal side-spill illumination

  • High clarity in panel indicators

Perfect for small icons, bar-style displays, and equipment signal slots.

3. Available in Multiple Colors

Options typically include:

  • Red

  • Green

  • Yellow

  • Blue

  • White

Ideal for multi-status indicators and low-power displays.

4. Low Power Consumption

These LEDs provide:

  • High luminous efficiency

  • Minimal heat generation

  • Long operational lifetime

Suitable for handheld or battery-powered products.

5. High Reliability & Durability

Made from high-grade epoxy resin and stable semiconductor chips, offering:

  • Mechanical shock resistance

  • Moisture durability

  • Stable forward voltage and brightness

2.0x5.0x7.0mm LED diode

⚙️ Applications of 1×3×4mm Rectangular LED Lamps

📟 1. Indicator Lights in Consumer Electronics

Used in:

  • Charging indicators

  • Mode selection indicators

  • Compact front-panel icons

📡 2. Telecommunications & Networking Equipment

Ideal for:

  • Signal status LEDs

  • Port activity lights

  • Device diagnostics

🧰 3. Industrial Control Panels

Provides clear, narrow output for:

  • Error alerts

  • Machine status signals

  • Control system feedback lights

🔋 4. Portable and Wearable Devices

Due to their ultra-small footprint, these LEDs are ideal for:

  • Health tracking devices

  • Smart accessories

  • Compact handheld instruments

📐 5. Custom Display Arrays

The rectangular geometry makes them perfect for:

  • Vertical or horizontal bar graph displays

  • Multi-segment indicators

  • Custom-pattern light modules

📘 Benefits of Using 1×3×4mm Rectangular LEDs

✔ Space-Saving Miniature Design

Ideal for next-generation compact electronics requiring high-density component layout.

✔ Clear & Focused Illumination

Rectangular profile reduces light bleeding, enhancing panel clarity.

✔ Flexible Orientation on PCBs

Can be mounted upright or horizontally depending on application needs.

✔ Low Energy Consumption

Optimized for low-current operation without sacrificing brightness.

✔ Long-Term Reliability

Suitable for devices requiring constant indicator illumination.

📂 Case Study: Compact Medical Equipment Indicator Upgrade

A medical technology company required an indicator LED for a handheld diagnostic tool with extremely limited internal space. They switched to 1×3×4mm rectangular LEDs.

Results:

  • Achieved 40% space savings on the PCB

  • Improved directional clarity for small viewing windows

  • Increased product reliability with long-life LED components

  • Reduced heat generation compared to older SMD LEDs

This upgrade allowed the manufacturer to redesign the device into a thinner, lighter model.

💬 User Testimonials

Electronics Engineer – Germany

“The 1×3×4mm LEDs fit perfectly in tight locations where no other LED size works.”

Product Designer – Japan

“Their rectangular beam output gives our UI panels a sharp, clean look—much better than round LEDs.”

Hobbyist – USA

“Easy to solder, bright for their size, and perfect for custom bar graph projects.”

🏁 Conclusion

The 1×3×4mm rectangular type LED lamp is a compact, efficient, and versatile lighting solution perfect for engineers and designers working on space-constrained devices. Its directional output, low power requirements, and high reliability make it ideal for advanced electronics, control systems, and miniaturized consumer devices.

Whether you’re developing a next-generation handheld gadget, optimizing PCB space, or building a crisp indicator panel, this miniature LED delivers exceptional performance in a tiny footprint.

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.

1X3X4mm Rectangular Type LED Lamps


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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