Through hole LED
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Weight:(g/pcs)
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Description:
2×5×9mm Rectangular Type LED Lamps – Rectangle with One Curved Side for Enhanced Optical Performance
The 2×5×9mm rectangular type LED lamp, designed with a flat rectangular body and one curved side, is an excellent indicator LED for applications requiring stronger visibility, improved light diffusion, and a unique optical appearance. This LED combines the precision of a rectangular housing with the softer, wider beam spread created by a gently curved lens surface. Engineers and product designers prefer this style for its clear signaling, enhanced viewing angles, and adaptability in both industrial and consumer electronic environments.
Its compact footprint, reliable performance, and versatile color availability make it ideal for PCB indicators, light bars, control panels, small displays, and signaling systems.
⭐ Key Features
1. Unique Rectangular Housing with One Curved Side
The LED features:
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A flat, rectangular profile for alignment with PCB cutouts, light bars, and display windows
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A single curved lens surface that enhances light distribution
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A modern appearance suitable for user-interface lighting
This shape improves both optical performance and design flexibility.
2. Standard 2×5×9mm Package
This size supports:
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Tight PCB spaces
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Narrow indicator slots
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Compact electronic product designs
The tall 9mm height ensures outstanding visibility, making it ideal for front-panel indicators.
3. High Brightness & Uniform Illumination
The curved lens helps produce:
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Smooth, diffused illumination
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Better visibility from multiple angles
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Reduced glare compared to fully flat LEDs
It provides excellent clarity in low-light and bright environments.
4. Available in Multiple Colors
The 2×5×9mm LED is available in:
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Red
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Green
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Yellow
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Blue
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White
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Bi-color options (upon request)
Its color flexibility makes it suitable for multi-function signaling.
5. Energy-Efficient & Low Heat
This rectangular LED diode uses:
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Low forward voltage
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Minimal current
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High-efficiency die technology
It delivers bright light without excessive heat, making it ideal for long-term use.
6. Durable Through-Hole Design
TH mounting provides:
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Excellent mechanical stability
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Strong resistance to vibration
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Long operational life
Suitable for rugged industrial and automotive applications.
⭐ Applications of the 2×5×9mm Rectangular LED Lamp
✔ Industrial Control Panels
Ideal for switches, mode indicators, warning signals, and diagnostic lighting.
✔ Instrumentation Equipment
Precise and clear visual feedback in measurement tools and monitors.
✔ Consumer Electronics
Used in display panels, small appliances, audio equipment, and power indicators.
✔ Telecommunication Devices
Provides crisp signal and status indication in routers, transmitters, and network hardware.
✔ Medical & Laboratory Equipment
Clear illumination without glare makes it ideal for sensitive diagnostic equipment.
✔ Automotive Electronics
Perfect for indicator clusters, dashboard signals, and backlit buttons.
✔ Bar Graph & Light Bar Assemblies
The rectangular shape aligns perfectly for:
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Custom light bars
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Numeric/level indicators
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Multi-LED display modules
⭐ Benefits of the One-Curved-Side LED Design
✔ Enhanced Viewing Angle
The curved lens broadens side visibility — ideal for wide-angle signaling.
✔ Softer, More Uniform Light Output
Great for situations where glare-free illumination is essential.
✔ Compact but Tall Indicator Surface
Allows good visibility even in crowded PCB layouts or recessed panel areas.
✔ Reliable, Long-Life Illumination
Stable performance makes it suitable for mission-critical electronics.
✔ Aesthetic and Functional
Curved lens gives a modern look while improving optical behavior.
⭐ Case Study
A manufacturer of handheld diagnostic devices required:
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A bright front-panel indicator
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Slim rectangular footprint
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A wider viewing angle
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Long-term component reliability
They selected the 2×5×9mm rectangular LED with one curved side because it offered:
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Higher visibility at different viewing directions
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A premium, modern appearance
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Consistent color output under low current
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Easy integration with their existing light bar assembly
The LED significantly improved usability and visual clarity in the final product.
⭐ User Testimonials
Industrial Electronics Engineer – UK
“The curved side helps spread the light better than flat rectangular LEDs. Extremely good in control panel applications.”
Product Designer – USA
“Great balance between brightness and size. The 9mm height makes it noticeable without taking much PCB space.”
OEM Equipment Buyer – Germany
“Reliable, cost-effective, and ideal for our indicator modules. The rectangular shape aligns perfectly with light bar designs.”
⭐ Conclusion
The 2×5×9mm rectangular type LED lamp with one curved side is an excellent solution for applications requiring both precision and soft light emission. Its unique geometry, high brightness, and durable construction make it suitable for a broad range of industries from consumer electronics to industrial automation.
This LED provides engineers with a professional, space-efficient lighting component that enhances visibility, improves design aesthetics, and ensures long-term operation.
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.
