uvb 311 nm lamp led tube 9W replace philips 9W uv bulb
Product Description
The DS-UVB311-3535-15W is a 308nm UVB LED lamp designed for integration into compatible UVB phototherapy equipment and specialized UVB light systems.
Unlike conventional fluorescent UVB tubes, this model uses an LED light source. It contains 21 pieces of 308nm UVB LEDs plus 6 pieces of SMD3535 395nm LEDs.
The UVB peak wavelength is 308nm, with a specified wavelength range of 306–310nm and spectral bandwidth of 14nm.
The lamp has an electrical power of 15W and specified UV radiant power of 30mW.
At a measurement distance of 10mm, the specified irradiance is 5–7mW/cm². The specified irradiation area is 18cm².
Because UV irradiance changes with distance, geometry and operating conditions, the 10mm measurement distance should always be stated together with the irradiance value.
The lamp supports AC100V–265V input and has a specified current of 80mA. A 120° beam angle provides wide UV output from the LED array.
Thermal management is provided by a heat-dissipating housing and fan. The specified operating temperature range is -20°C to +55°C.
Standard dimensions are 24 × 4 × 3cm. Customized dimensions are also available for compatible OEM equipment projects.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model No. | DS-UVB311-3535-15W |
| Peak Wavelength | 308nm |
| Wavelength Range | 306–310nm |
| Spectral Bandwidth | 14nm |
| Radiant Power | 30mW |
| Irradiance | 5–7mW/cm² |
| Measurement Distance | 10mm |
| Irradiation Area | 18cm² |
| Electrical Power | 15W |
| Input Voltage | AC100V–265V |
| Current | 80mA |
| Beam Angle | 120° |
| LED Configuration | 21pcs 308nm + 6pcs SMD3535 395nm |
| Cooling | Heat-dissipating housing and fan |
| Operating Temperature | -20°C to +55°C |
| Lifetime | More than 20,000 hours |
| Size | 24 × 4 × 3cm or customized |
308nm UVB Lamp vs. UVB 311 nm Lamp
A 308nm UVB lamp and a UVB 311 nm lamp should not be treated as the same light source.
A typical 311nm narrowband UVB lamp is designed around approximately 311nm output. By comparison, the DS-UVB311-3535-15W has a specified peak wavelength of 308nm and a wavelength range of 306–310nm.
For this reason, this product should be identified by its actual optical specification as a 308nm UVB LED lamp, rather than being marketed as a 311nm narrowband UVB lamp.
Buyers comparing 308nm and 311nm UVB light sources should evaluate wavelength spectrum, irradiance, irradiation area, working distance, thermal management and the requirements of the final equipment.
Applications
The DS-UVB311-3535-15W can be considered as a UVB light source for compatible:
- UVB phototherapy equipment
- UVB LED light systems
- UVB research equipment
- Laboratory UVB equipment
- OEM UVB devices
- Custom UV LED equipment
Final suitability depends on the complete equipment design, required wavelength, UV dose, exposure area, working distance and applicable regulatory requirements.
Application and Safety Notes
UVB radiation can injure the skin and eyes. Do not look directly at the operating LEDs or expose unprotected eyes to UVB radiation.
Appropriate UV protective equipment and shielding should be incorporated into the final system.
The specified irradiance of 5–7mW/cm² is measured at a distance of 10mm. Irradiance at another distance should not be assumed to be the same.
For phototherapy equipment, exposure time and UV dose should not be determined from electrical wattage alone.
The product’s peak wavelength is 308nm, not 311nm. Equipment designers should verify that the 306–310nm wavelength range is suitable for the intended application.
The product also contains six 395nm LEDs. This should be considered when evaluating the complete optical output.
Adequate airflow should be maintained around the heat-dissipating housing and fan.
For medical or therapeutic equipment, the final manufacturer is responsible for validation, safety testing, regulatory compliance and establishing appropriate treatment protocols.
FAQ
Is this a UVB 311 nm lamp?
No. The model number is DS-UVB311-3535-15W, but its specified peak wavelength is 308nm and its wavelength range is 306–310nm. It should therefore be described as a 308nm UVB LED lamp rather than a 311nm UVB lamp.
What is the difference between this 308nm UVB lamp and a 311nm UVB lamp?
The main difference is wavelength. This product peaks at 308nm with a specified 306–310nm range. A 311nm UVB lamp is designed around approximately 311nm. The optical spectrum, irradiance and final equipment requirements should be compared before selecting a light source.
What is the irradiance of this UVB LED lamp?
The specified irradiance is 5–7mW/cm² at a measurement distance of 10mm.
What is the radiant power?
The specified radiant power is 30mW.
Is 15W the UV output power?
No. The 15W specification is electrical power. The specified radiant power is 30mW. Electrical power and UV radiant power are different parameters.
What LEDs are used in the lamp?
The lamp contains 21 pieces of 308nm LEDs and 6 pieces of SMD3535 395nm LEDs.
What is the irradiation area?
The specified irradiation area is 18cm².
What input voltage does the lamp support?
The lamp supports AC100V–265V input with a specified current of 80mA.
How is the UVB LED lamp cooled?
It uses a heat-dissipating housing together with a fan for thermal management.
What is the operating temperature?
The specified operating temperature range is -20°C to +55°C.
What is the expected lifetime?
The specified lifetime is more than 20,000 hours under appropriate operating conditions.
Can the size be customized?
Yes. The standard size is 24 × 4 × 3cm, and customized dimensions are available for compatible projects.
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