news digest ♦ LEDs
from the American Recovery and Reinvestment Act through the U.S. Department of Energy’s Energy Efficiency and Conservation Block Grant Program to fund the $106,000 lighting project. The installation was completed in April, 2011.
Compact super-thin ChipLEDs from Vishay Intertechnology
The aluminium indium gallium phosphide and indium gallium nitride LEDs come in white and a range of colours for backlighting applications
Vishay Intertechnology has unveiled a series of super-thin, ultra-bright LEDs in what the firm says is the smallest SMD 0603 package.
The new VLMx1300 series of LEDs uses an innovative ChipLED technology, paving the way for smaller end products with higher performance, more flexibility in design, and enhanced applications. The 0603 VLMx1300 LEDs will serve in small-scale, high-brightness products that must work reliably in demanding environments.
true green, blue, and white. Using ultra-bright AllnGaP and InGaN technologies (depending on colour), the colour LEDs have a luminous intensity as high as 450 mcd at a forward current of 20 mA and a maximum forward voltage of 3.8 V.
Blue is available with a protection diode that provides ESD immunity up to 8,000 V. The white LED has a maximum luminous intensity of 180 mcd at a forward current of 5 mA and a maximum forward voltage of 3.15 V. The table below lists characteristics by part number.
The VLMx1300 ChipLED series› low profile, brightness and reliability make the colour versions ideal for backlight applications including keypads, navigation systems, cellular phone displays, displays for industrial control systems, miniaturized colour effects, and traffic displays. The white version works well in backlighting for telephone and fax, audio and video equipment, office equipment, indoor and outdoor message boards, and flat backlight for LCDs, switches, and symbols.
The devices are available in 8 mm tape on a 7 in. diameter reel grouped by luminous intensity and wavelength to ensure an even appearance in end products. They are compatible with IR reflow soldering and compliant to RoHS Directive 2002/95/EC and in accordance to WEEE 2002/96/EC. VLMx1300 LEDs are lead- free and are suitable for lead-free soldering.
Samples and production quantities of the new ChipLEDs are available now, with lead times of eight weeks for larger orders.
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New VLMx1300 series ChipLEDs (photo courtesy of Vishay Intertechnology›s photostream)
All LEDs in the VLMx1300 series are mounted on highly reliable PCBs measuring 1.6 mm x 0.8 mm x 0.55 mm and have an extremely wide 130° viewing angle. Available colours include super red, soft orange, yellow, yellow green,
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www.compoundsemiconductor.net January / February 2012
‘The right LED’ for the right application
Everlight is offering ‹smart binning› for its Shuen and Shwo high power LED series
Everlight Electronics, a player in the global LED
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