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Frequently Asked Questions

  • The CrayoLED™ is available for purchase and sampling direct through CrayoNano's sales team ( or through our distribution channel. 

    European Partners: 

    Laser Components (
    +49 152 0909 3023

  • Our Sales and Customer Operations team are happy to assist you with your request. Please fill our contact form HERE, and our team will get back you as soon as possible.

  • Yes, our CrayoLED™ is RoHS and REACH compliant. We are committed to upholding the highest standards of environmental responsibility and sustainability. The certificates can be found on our FILES page.

  • The total system design—thermal management, power design, and module design—directly contributes and effects the UV-C LED product lifetime.

    Using TM-21 modeling, we have extrapolated an L70 lifetime of over 10,000 hours at standard operating conditions. In our testing, the CrayoLED™ running continuously for over 3,000 hours at 350 mA and more than 3,000 hours at 500 mA and 700 mA, with a solder temperature of 38 °C. 

    Would you like a copy of the report?  Request the form here

    Our industry experts are available for technical support and assistance, reach out to us through our Contact Form.

  • The CrayoLED™ has a nominal driving current of 350 mA and a maximum driving current of 500 mA. Running LEDs at their maximum values will have an effect on the overall performance and lifetime. Product performance and reliability depends on the overall system design—including (but not limited to) thermal management, optical design, and assembly processes and materials.

    In our testing, the CrayoLED™ has been running continuously for over 6,000 hours at 350 mA and more than 3,000 hours at 500 mA, with a solder temperature of just 37.8 °C. This performance highlights the robustness and reliability of the CrayoLED™.

  • UV-C LEDs can contribute to sustainability in several ways. First, they use significantly less energy than traditional UV lamps, which can help reduce overall energy consumption. Additionally, UV-C LEDs have a much longer lifespan than traditional UV lamps, which means they need to be replaced less frequently and can reduce waste. They can also be used in air and water disinfection systems to help reduce the use of chemicals and other pollutants. Furthermore, UV-C LED lights do not contain mercury, which is a toxic substance found in traditional UV lamps that can be harmful to the environment if not disposed of properly.
  • Mercury lamps have been commonly used for disinfection purposes, with a peak wavelength of 254 nm. However, with the availability of UV-C LEDs in the range of 250–280 nm, offer more available sources.

    Microbes have different sensitivities to UV-C, as shown by the virucidal efficiency action spectra curve. For example, E. coli is most sensitive to a peak wavelength of 265 nm, which is often referenced as the wavelength for optimal germicidal effectiveness.

    When choosing a wavelength for disinfection purposes, it's important to consider the trade-off between virucidal efficiency and output power. Shorter wavelength LEDs typically have lower output power, while longer wavelength LEDs, such as 275 nm, have higher output power. Although 275 nm may have lower virucidal efficiency, the higher output power and better wall plug efficiency can compensate for this. This is known as virucidal power, which is the normalization of wavelength dependency for virucidal efficiency and optical output power.
  • UV-C radiation wavelength range between 100–280 nm and is the shortest wavelength of the electromagnetic spectrum. It has a high energy radiation that is absorbed by DNA, RNA and proteins. UV-C radiation principal mode of microbial inactivation occurs when the absorption of a UV-C absorption by DNA or RNA, then forms pyrimidine dimers between adjacent thymine bases and renders the microbe incapable of replicating properly.

    It is important to note that UV-C radiation can also be harmful to humans and other living organisms, so precautions must be taken when using UV-C radiation. Exposure to high levels of UV-C radiation can cause skin and eye damage. Therefore, it is recommended to use UV-C radiation in a controlled and safe manner, wearing the proper safety equipment.