UV-C LEDs (200 nm to 280 nm wavelength) are quickly gaining importance in sanitation devices neutralizing bacteria & viruses. To help you speed up your development of UV-C devices, we have designed prototyping starboards for several LEDs in AlN ceramic. The ceramic substrate and highly UV-reflective coating ensure that you can use the full potential of your UV LEDs.
AlN ceramics are not only the best material to cool the LED and approach the CTE coefficient of most LEDs but they will also better withstand degradation caused by UV-C radiation, thanks to the highly UV-C reflective solder mask.
Standard, we offer our AlN UV-C LED starboards with an aluminum nitride substrate with a copper metalization.
Specifications and characteristics:
- Material: Aluminum Nitride (170 W/mK) – 1mm
- Conductor: Copper (Cu – 35um / 1oz)
- Dielectric: highly UV-C reflective White solder mask
- Surface finish: electroless nickel immersion gold (ENIG) (the nickel gold layer ensures easy solderability and oxidation resistance)
- Thermal expansion (CTE): 2 ~ 3 ppm/°C
- Thermal conductivity: >170 W/mK at 20°C
- UV-reflectivity: >80%
The CERmaUVS is equipped with a highly reflective UV-C solder mask that reflects >80% in the UVC spectrum, preventing underperformance and degradation. The mask measured at 280nm a reflectivity of 85.7%, and after a 2000h irradiation test a reflectivity of 90.1%.
Highly UV-C reflective coating reflectance graph
Typical applications :
- Air, water, and surface disinfection
- Ink and paint curing (UV curing)
- Odor control
- Medical and biomedical applications
- Counterfeit detection/validation (currency, driver’s license, documents, etc.)
Footprints:
We currently have AlN UV-C LED starboards for the 1414 [3535 metric] footprint. The following LED footprints are suitable for the starboard PCB:
1414 [3535 metric] footprint pad dimensions
- SETi/Seoul Viosys – CUD5GF1B – 255nm Deep UV
- CrayoNano – CLH-N3S Crayo UV-C LED-275nm UV-C LED
- Everlight – ELUC3535NUB 0.13W series – 270 ~ 285nm UV-C LED
- Everlight – ELUC3535NUB 0.7W series – 270 ~ 285nm UV-C LED
- OSRAM – SU CULBN2.VC – 275nm UV-C LED
- Lumex – SML-LXF3535UVCC10 – 270 ~ 285nm
- Luminus – XBT-3535-UV – 270 ~ 285nm UV-C LED
- Wurth elektronik – 15335339AA350 – 395nm UV LED
- Wurth elektronik – 15335340AA350 – 405nm UV LED
- Vishay – VLMU3511-365-130 – 360~370nm UV SMD LED
Disclaimer: CERcuits is not affiliated with any of the LED manufacturers or distributors mentioned/listed above. The links provided are purely informative and do not mean we are advising or validating the manufacturers in any way.
If you need another footprint, please let us know, and we can update our design to meet your demand. Select the option ‘custom footprint’ above with a minimum of 20 ordered pieces. The estimated lead time for custom-made starboards is 4 weeks.
If you are looking to make your own Aluminum nitride PCB for UV-C LED starboards or other applications. You can get a quote easily & order online via the configurator.