Wavelength selection plays a decisive role in UVC disinfection efficiency. While 265nm is often cited as the peak absorption wavelength for DNA, practical system design requires balancing efficiency, LED lifetime, and system cost.
254nm LEDs closely resemble traditional mercury lamp output, making them suitable for retrofit designs. 275nm LEDs, on the other hand, offer higher optical output and longer lifespan, making them increasingly popular in commercial systems.
Choosing UVC LED SMDs with different wavelengths depends on regulatory targets, system constraints, and long-term operational requirements.
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