Through hole LED
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Weight:(g/pcs)
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Datasheet Inquiry
Description:
2.0×3.0×4mm Rectangular Type LED Lamps – One Curved Side Design for Enhanced Light Control
The 2.0×3.0×4mm rectangular type LED lamp, designed with a rectangle body featuring one curved side, is a compact and versatile indicator LED ideal for modern electronic applications. This unique geometry combines the sharp visibility of a rectangular LED with the soft light distribution provided by a semi-curved lens. As a result, the LED delivers excellent optical performance, uniform brightness, and a modern appearance suited for industrial and consumer electronic devices.
Its small size, low power consumption, and reliable through-hole design make it a widely used LED for signaling, instrument panels, portable devices, and control displays.
⭐ Key Features
1. Unique Rectangular Shape With One Curved Side
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One side is flat for tight PCB alignment.
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The curved side enhances the diffusion of light and improves viewing angles.
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Aesthetic visual appearance makes it suitable for display windows and indicator panels.
2. Compact 2.0 × 3.0 × 4mm Size
This miniature package is perfect for:
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Dense PCB layouts
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Compact handheld devices
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Slim indicator windows
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Precision electronic modules
Its small footprint allows designers to save space without sacrificing illumination quality.
3. High Brightness Output
Engineered with efficient LED chips for:
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Strong visibility in various ambient light conditions
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Stable brightness
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Uniform optical performance across the lens surface
Suitable for environments requiring clear and reliable status signaling.
4. Multiple Color Options Available
Common colors include:
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Red
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Green
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Yellow
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Blue
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Bi-color options
This versatility makes it adaptable to different signaling and coding applications.
5. Excellent Light Uniformity
The curved side provides:
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Softer light emission
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Reduced glare
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Enhanced side-view visibility
Ideal for horizontal or angled mounting applications.
6. Low Power, Long Life
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High efficiency means minimal power consumption
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Ideal for battery-operated equipment
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Long lifespan with excellent reliability
7. Through-Hole Mounting for Durability
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Strong mechanical stability
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Suitable for industrial devices exposed to vibration
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Easy to solder and integrate into traditional PCB designs
⭐ Applications of the 2.0×3.0×4mm Rectangular LED
This LED type is widely used across industries due to its brightness, compact size, and clear visibility.
✔ Instrumentation Panels
Perfect for instruments requiring crisp indicators or status LEDs.
✔ Consumer Electronics
Used in products such as:
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Audio devices
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Home appliances
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Charging indicators
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Handheld tools
✔ Industrial Control Systems
Provides reliable signaling for:
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Machine panels
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Control buttons
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Fault indication
✔ Communication Devices
Clear visibility for:
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Network indicators
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Modems
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Signal equipment
✔ Automotive and Transportation Electronics
Suitable for dashboard instrumentation and compact display clusters.
✔ Small Displays and Light Bars
Can be arranged into:
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Multi-LED arrays
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Custom indicators
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Light bars and bar-graph signals
⭐ Benefits of the Rectangular LED with One Curved Side
✔ Improved Viewing Angle
The curved side enhances wide-angle visibility, making it easier to view from different directions.
✔ Aesthetic and Functional
The hybrid rectangular–curved design improves appearance while enhancing optical performance.
✔ Space-Efficient Design
Small package fits perfectly into tight enclosures and compact indicator designs.
✔ High Reliability
Its through-hole structure makes it durable in industrial and high-vibration environments.
✔ Visual Comfort
The curve diffuses light and avoids harsh hotspots seen in typical rectangular LEDs.
⭐ Case Study
A portable medical sensor manufacturer needed an LED indicator with:
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Small footprint
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Soft, uniform illumination
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Clear visibility in bright hospital environments
By integrating the 2.0×3.0×4mm rectangular LED with one curved side, they achieved:
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Higher visual clarity on device status
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Reduced eye strain for clinicians
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Space savings on the PCB
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A cleaner, more modern look for their product
The LED became a standard component in their updated product line.
⭐ User Testimonials
Electronic Design Engineer – USA
“The curved side gives the LED a smoother glow, which looks more premium in our consumer product line.”
Industrial Controls Technician – UK
“Excellent visibility from multiple angles. Very reliable in control panels.”
Hardware Developer – Germany
“The compact size helped us reduce PCB area while still keeping a bright status indicator.”
⭐ Conclusion
The 2.0×3.0×4mm rectangular type LED lamp with one curved side delivers an excellent balance of compact design, bright illumination, and aesthetic appeal. Its enhanced viewing angle, energy efficiency, and rugged reliability make it suitable for a wide range of applications, from industrial control systems to compact consumer electronics.
Whether used as a single indicator or integrated into a bar-graph or multi-LED array, this LED offers dependable performance and modern visual quality.
Electrical-optical characteristics:
Package configuration & Internal circuit diagram
Obtain 3D specification files
Initial Graphics Exchange Specification (.IGS)Standard 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.
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
More Information
Lens Color:
| Code | D | T | C | W | E | |
| Meaning | color Diffused | Color Tinted | Water Clear | Water Diffused | Orange diffused |
Absolute maximum ratings (Ta=25°C)
| Parameter | SR | LR | UR | UE | UY | UG | PG | BG | B | UB | UV | W | Unit |
| Forward Current I F | 25 | 25 | 25 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | mA |
| Power Dissipation P d | 60 | 60 | 60 | 65 | 65 | 75 | 110 | 110 | 120 | 120 | 120 | 120 | mW |
| Reverse Voltage V R | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | V |
| Peak Forward Current I PF (Duty 1/10 @1KHZ) | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 100 | 100 | 100 | 100 | 100 | mA |
| 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:
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.
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 Soldering | Soldering Iron | |||
| Pre-Heat | 150-180°C | Pre-Heat | 100°C Max. | Temperature | 300°C Max. |
| Pre-Heat Time | 120sec Max. | Pre-Heat Time | 60sec Max. | ||
| Peak Temperature | 260°C Max. | SolderWave | 260°C Max. | Soldering Time | 3sec Max.(one time only) |
| Soldering Time | 10 sec Max. | Soldering Time | 5sec 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.
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.
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.
