uv led chip 420nm
Product Details Description
The Seoul Viosys CUN26B1B is a high power uv led chip with 420nm wavelength in violet/visible range which requires compact SMD package, directed radiation and reliable module design. With 420nm wavelength, 1040mW radiant power, 3.5V voltage, 500mA current, and a 45° view angle, it is good for manufactures making curing tools, printing systems, coating equipment, inspection lamps, UV torch products, and custom UV LED modules.
The uv led chip is one of products of Seoul Viosys Z5 NUV LED series. The series is designed for applications with high current and high output, based on the modern SMD design and low thermal resistance material. The 3.5 x 3.5 x 2.8mm package suits the compact layout in PCB-mounted light engines, handheld devices and UV-related industrial equipment.
The 420nm wavelength lies in violet/visible range and is often chosen for applications with near-UV response and visible violet output. Compared with 365nm and 385nm UV LEDs, 420nm usually produces more visible violet light that helps the visual alignment, inspection positioning, UV-reactive display effects and some material-response checks.
For curing and production applications, the uv led chip can be applied in UV curing modules, printing equipment, coating systems, adhesive curing tools, and dental curing devices with responsive material to 420nm output. The final curing result depends on the material chemistry, exposure distance, driver current, optical design, PCB temperature and required dose.
The 45° narrow beam makes the CUN26B1B suitable for designs requiring stronger local radiation within smaller target area. It differs from wide 120° LEDs radiating across the broad surface. The focused beam profile is useful for UV flashlight heads, spot inspection lamps, adhesive bonding tools, compact exposure devices and detecting equipment.
For OEM and ODM orders, the uv led chip CUN26B1B can be welded on 12mm, 14mm, 16mm, 20mm or other aluminum or copper PCB boards. The aluminum PCB is good for most UV module designs, but copper PCB can be used in case of higher thermal transferring. The LED can be offered as a component or assembled UV flashlight modules, curing modules, inspection lamps and other customized UV LED products.
Thermal design is important for a 500mA high-output LED. For supporting stable radiant output and long-term operation, use the right constant-current driver, proper soldering process, correct PCB material and heat dissipation. The engineers should test board temperature, radiant output, beam profile and application performance in the final product before mass-production.
It is an UV LED component, not a completed device. A finished product includes driver circuit, PCB board, heat sink, housing, optical lens or reflector, wiring, switch and safety elements. The CUN26B1B is a 420nm near-UV/violet-edge light source, not a UVC sterilization LED and should not be advertised for disinfection and germicidal applications.
Do not look directly at the working LED, and do not expose skin and eyes unnecessarily during testing and assembly of this product. Wear protective eyewear, shielding, warnings and apply safe working procedure in the final product design.
Specifications
Brand: Seoul Viosys
Model NO.: CUN26B1B
Wavelength: 420nm uv led chip
Size: 3.5 x 3.5 x 2.8mm
Voltage: 3.5V
Current: 500mA
Radiant Power: 1040mW
View Angle: 45°
PCB Options: Can be welded on 12mm, 14mm, 16mm, 20mm, or other aluminum or copper PCB board
Service: OEM ODM service for UV flashlight or other UV LED module
Features & Benefits
High power output
Designed for high current operation
Narrow viewing angle
Low thermal resistance
SMT type
Lead free product
RoHS compliant
Z5 NUV LED package
Suitable for focused 420nm module design
Key Applications
UV Curing
Printing
Coating
Adhesive
Counterfeit Detection / Security
UV Torch
Fluorescence Photography
Dental Curing
Crime Inspection
Oil Leak Detection
FAQ
What is this uv led chip used for?
This uv led chip is used for UV curing, printing, coating, adhesive curing, counterfeit detection, security inspection, UV torch design, fluorescence photography, dental curing, crime inspection and oil leak detection if the target material or application responds to 420nm output.
Is CUN26B1B a Seoul Viosys UV LED?
Yes. CUN26B1B is a Seoul Viosys Z5 NUV LED in a 3.5 x 3.5 x 2.8mm SMD package.
What wavelength does this LED use?
The CUN26B1B uses a 420nm wavelength. It is better to say this is a near-UV / violet-edge light source.
What is the radiant power?
The radiant power is 1040mW.
What is the forward voltage?
The forward voltage is 3.5V.
What is the operating current?
The operating current is 500mA.
What is the package size?
The package size is 3.5 x 3.5 x 2.8mm.
What is the view angle?
The view angle is 45°, providing narrow beam for the curing, inspection, UV torch and detection applications.
Can this LED be mounted on PCB boards?
Yes. It can be welded on 12mm, 14mm, 16mm, 20mm or other aluminum or copper PCB boards by the final product structure.
Do you offer OEM or ODM UV LED modules?
Yes. We can offer OEM and ODM services for UV flashlight modules, UV curing modules, inspection lights, dental curing modules and other customized UV LED assemblies.
Is this LED suitable for UV curing?
Yes. It can be used for curing, adhesive curing, printing, coating, dental curing and other related applications if the material responds to 420nm output.
Can it be used for UV flashlights?
Yes. Its 420nm wavelength, 1040mW radiant power and 45° beam angle make it suitable for focused UV flashlight and UV torch module design.
Is this uv led chip suitable for sterilization?
No. This is a 420nm near-UV / violet-edge LED, not a UVC sterilization LED. It should not be used or advertised for disinfection and germicidal applications.
Why is thermal design important?
The CUN26B1B operates at 500mA and produces high radiant output, so proper PCB material, heat sinking, current control and thermal testing are important for stable module performance.
Is it safe to look directly at the LED?
No. Do not look directly at the working LED. Use protective eyewear, shielding and safe working procedure during testing, assembly and operation.
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