Violumas boosts 275nm and 265nm UVC LED output
Violumas, a US-based provider of high-power UV LEDs, has launched 275nm and 265nm LEDs in mid-power, high-power, and high-density packages.
The radiant flux of the LEDs is 35-50 percent higher than the previous generation, to achieve 130mW (275nm) and 110mW (265nm) in compact, single-LED packages of 5.2mm x 5.2mm. The improvement is achieved by the incorporation of a transparent p-Contact layer and high reflectivity metallisation in the epi-wafer, according to the company.
The LEDs are also available in 4-LED, 9-LED, and 16-LED chip-on- board (COB) configurations.
The company's high-density VC4X4 series are said to feature the most powerful single-emitter UVC LED on the market. With the development of higher power 265nm and 275nm LEDs, the VC4X4C48L9-275-V1 boasts 1650mW radiant flux while the VC4X4C48L9-265-V1 features 1400mW radiant flux.
Due to the integrated thermal structure (3-PAD) in the Flip Chip LED and the Metal Core PCB, Violumas LEDs achieve rapid thermal dissipation rates and lower thermal resistance values, according to the company. As UVC LEDs generate immense amounts of heat and require substantial cooling solutions, this technology is critical for more reliable, compact, and long-lasting UVC LED systems. It also allows Violumas UVC LEDs to withstand a nominal driving current of 700mA per LED chip, at which the LED maintains >70 percent of its original intensity after 10,000 hours of continuous operation.
