Hermetic TO-can package for 235nm and 255nm UV-C LEDs
Silanna UV in Australia has launched two UV-C LEDs in a hermetic TO format package to ease the integration into high performance sensor designs.
The packaging is used for the SF1 235nm and SN3 255nm series of UV-C LEDs: the SF1-3T9B5L1 and the SN3-5T9B5L1.
The TO-can package consists of a header and a cap that together form a hermetically sealed package to protect the UV-C LEDs. The header supplies power to the encapsulated components, while the cap enables the transmission of optical signals. The strong weld between the cap and the header provides hermetic protection to the die, and the ball lens offers a narrow viewing angle for the high irradiance required in most sensing applications.
An industrial standard TO-39 footprint, using a steel header with a gold coating. These devices have ESD protection and contain no mercury. The TO-39 package has an 18-degree viewing angle enhancing radiant intensity and measurement resolution.
The SF1-3T9B5L1 is a far UV-C emitting device with a peak wavelength of 235nm, making it effective for water quality detection of Nitrate (NO3) and Nitrite (NO2), gas detection of Carbon dioxide (CO2), and liquid chromatography.
The SN3-5T9B5L1 is a deep UV-C LED with a peak wavelength of 255nm, making it effective for water quality detection of COD (chemical oxygen demand) and TOC (total organic carbon), as well as gas detection for Ozone (O3) and medical analyzers. It has a high optical output power, making it suitable for a range of applications including chemical and biological analysis, water quality monitoring, gas sensing, and liquid chromatography.
Both the SF1-3T9B5L1 and SN3-5T9B5L1 offer stability of less than 0.5 percent drift and fluctuation in a steady state. They are also compatible with off-the-shelf optical systems, making them a suitable choice for sensing applications.