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Optoelectronics/Displays??

Multicolor, half-watt LEDs come in PLCC-4 package

Posted: 10 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:half-watt Power LEDs? Power LEDs PLCC-4? ASMT-QWB2 ASMT-QxB2?

Avago Technologies claims to deliver the industry's first half-watt high-brightness LEDs in an industry-standard PLCC-4 SMT package. The Power LEDs may be used in automotive interior and exterior lighting, electronic sign and signals (ESS), office automation, home appliances and industrial equipment.

The 0.5W Power LEDs, which are available in white, amber, red-orange and red colors, feature the industry's smallest package size, a wide 120viewing angle and are optimized for long operating life under severe environmental conditions. Moreover, the high-brightness LEDs are designed to dissipate heat more efficiently to provide superior thermal management and consistent light output, said Avago.

The ASMT-QWB2 and ASMT-QxB2 0.5W LEDs feature typical luminous flux of 9.8-17 lumens at 150mA drive currents. The colors and corresponding part numbers for the high-brightness SMT Power LEDs are: white (ASMT-QWB2), amber (ASMT-QAB2), red-orange (ASMT-QHB2) and red (ASMT-QRB2).

The 0.5W ASMT-QWB2 (white) and ASMT-QxB2 (amber, red-orange and red) series can be used for backlighting dashboards, dome and map lighting, puddle lamps, rear reverse lamp indicator lighting and license plate illumination in automotive applications. They can also be used for decorative lighting in general lighting applications, channel lettering in ESS applications, and for backlighting instrument panels and displays in industrial equipment, office automation and home appliance applications.

Other key features include a high optical efficiency of 30 lumens per watt, a high junction temperature of 125C and low thermal resistance of 60C/W junction-to-pin. The operating temperature is from -40C to 110C. The devices are Pb-free and RoHS compliant.

Moreover, the high brightness output per LED and small package footprint of 3.2-by-2.8-by-1.9 mm of the Power LED series provide lighting designers with greater flexibility in designing the size, shape and appearance of lighting assemblies, said Avago.

The 0.5W Power PLCC-4 series of LEDs also provides two significant advantages in the production environment, said Avago. They can be easily soldered using conventional SMT techniques to minimize production costs, and the package is qualified to a JEDEC moisture sensitive level rating of 2A. This rating means that the 0.5W Power LEDs can be kept in the open air (30C, 60 percent relative humidity) for up to four weeks after being removed from its sealed package without the need to remove absorbed moisture.

Available in 12mm tape on 8-inch (180mm) diameter reels, the 0.5W Power LEDs are priced from 53 cents to 73 cents each depending on quantity. Samples and production quantities are available now.

- Gina Roos
eeProductCenter




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