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UV LEDs take on mercury vapour lamps

Posted: 30 Oct 2012     Print Version  Bookmark and Share

Keywords:UV  LED  lamp 

Vishay Intertechnology Inc. debuts the VLMU3100 UV LED with a typical luminous intensity of 11mcd at 20mA, a typical wavelength of 405nm and forward voltage of 3.2V for low power consumption.


Packed in a surface-mount PLCC-2 package, the UV LED is seen as a solid-state replacement for mercury vapour lamps in applications such as adhesive curing. The VLMU3100's PLCC-2 package consists of a lead frame embedded in a white thermoplastic. The reflector inside the package is cast in clear silicon, guaranteeing a long lifetime. The viewing angle is 120°, and the package dimensions are 3.2mm x 2.8mm x 1.9mm.

The VLMU3100 is said to overcome the problems associated with systems based on mercury vapour lamps, which generate significant heat and degrade unpredictably over their service lives. By comparison, the UV LED features power dissipation of just 120mW and all the benefits of solid-state LED technology to ensure reliable and stable performance.

The VLMU3100's EIA- and ICE-standard PLCC-2 package is compatible with IR reflow and vapour phase soldering. The devices are supplied in 8mm tape for automatic placement equipment.

Samples and production quantities of the VLMU3100 are available now, with lead times of four to six weeks for larger orders.

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