Silanna UV SF2 — Next-Generation Far-UVC LED Doubles Radiant Intensity at 230 nm
Silanna UV has released the second generation of its Far-UVC LED line: SF2 reaches a typical center wavelength of 233 nm at 2 mW/sr radiant intensity per the vendor datasheet — twice the predecessor SF1, in a TO-Can package with 17° beam angle.
What happened
Silanna UV released the SF2 series in September 2025 — the second generation of its AlGaN-based Far-UVC LED. Center wavelength typically 233 nm, radiant intensity 2 mW/sr — a factor of two over SF1.
Why it matters
The Far-UVC LED path at 230 nm remains early-commercial in 2026. Wallplug efficiency and lifetime still trail krypton-chloride excimer lamps such as Ushio Care222 or Excimerlight for mass-disinfection applications.
For compact devices (mobile applications, point disinfection, sensor integration) and for applications where the 230 nm line is explicitly desired (e.g. specific photochemistry such as NO3-/NO2- detection), the SF1→SF2 doubling of radiant intensity is a real engineering step. AlGaN material questions — particularly hydrogen out-diffusion below 240 nm and lifetime characteristics — remain active research topics.
Context for LUVEX readers
UV-LED lifetime behaviour is treated in the Atlas-Article on UV-LED Lifetime & Degradation; positioning of the 230 nm line within the Far-UVC ecosystem is in the Atlas-Article on Far-UVC 222 nm Technology Status 2026.
Sources
Further reading
- https://www.semiconductor-today.com/news_items/2025/sep/silannauv-040925.shtml — semiconductor-today.com
LUVEX Atlas references
- [K1] UV-LED Lifetime & Degradation — L70 Modelling, Thermal Ageing, Maintenance Practice · source_backed
- [K2] Far-UVC 222 nm — Technology Status 2026 · internal reference
Primary source: https://www.semiconductor-today.com/news_items/2025/sep/silannauv-040925.shtml