TSLC T5 UV LEDs. The T5 family from TSLC are a family of high power UV LEDs. They all share the same 5 mm (T-1 ) through-hole package with a narrow beam angle. The T5 UV LEDs offer high reliability and high quality. Available in a variety of different UV wavelengths (listed below) makes them ideal for applications such as UV curing, aquariums, counterfeit detection and nail gel curing.. Features of the T5 UV LEDs: 5 mm package (T-1 ) Through hole package High quality High reliability 30° beam angle