Vishay Intertechnology, Inc. of Malvern, Pennsylvania USA, introduced a new member of its VLMU35xx series of ceramic, high-power UV LEDs with silicone lenses with a wavelength in the 365 nm range. Vishay Semiconductors designed the VLMU3510-365-130 to provide a reliable, energy-saving replacement for mercury lamps. Vishay says that the UV LED, which comes in a compact 3.45 mm by 3.45 mm surface-mount package, delivers an exceptionally long lifetime for industrial, medical, and printing applications. According to Vishay, the silicone lens of the VLMU3510-365-130 enables its extremely long lifetimes up to 25,000 hours, compared to the lifetime of a typical mercury lamp of merely 10,000 hours.
The environmentally friendly UV LED is free of heavy metals. With its shock resistance and immunity to degradation from frequent on/off switching, it offers improved reliability. Unlike mercury lamps that require complex drive circuits and need two to 15 minutes of warm up time, the VLMU3510-365-130 allows the use of simple low-voltage circuitry and needs no warm-up period.
Vishay fabricated the new UV LED with InGaN (indium gallium nitride) technology. At 500mA, the device features a typical radiant power of 690 mW, and at 700 mA its typical radiant power is 945 mW. The UV LED’s wavelength ranges between 362.5 nm and 370 nm. The device has an emission angle of 130° with a radiant intensity of 315 mW/sr at 700 mA.
The LED’s specifications make it ideal for blood and counterfeit money detection; photocatalytic purification; and UV curing in nail salon, dental, and poster printing applications. The RoHS-compliant, halogen-free, and Vishay Green, VLMU3510-365-130 is compatible with reflow soldering processes and has a Moisture Sensitivity Level of 3 in accordance with J-STD-020.
Samples and production quantities of Vishay’s new UV LED are available now, with lead times of six to eight weeks.