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Optoelectronics/Displays??

Vishay unrolls low-cost SMD white LEDs

Posted: 07 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:white LEDs? LED? SMD LEDs? Vishay? backlight?

White SMD LEDs from Vishay

Vishay Intertechnology Inc. has released a series of sapphire-based, high-intensity white SMD LEDs that promise highly efficient InGaN technology at a low price. The VLMW41XX series of SMD LEDs provides cost-effective illumination for applications including backlighting in automotive dashboards and switches; indicators and backlighting in telecom systems, A/V equipment and office equipment; and flat backlighting for LCDs, switches and symbols in general use.

The devices offer a 60&176; angle of half-intensity, a luminous intensity of 112mcd to 355mcd and a typical color temperature of 5500K. The LEDs feature an ESD-withstand voltage up to 2kV, in accordance with JESD22-A114-B.

The package for the new series is the EIA- and ICE-standard PLCC-2, which consists of a lead frame embedded in a white thermoplast. The reflector inside the package is filled with a mixture of epoxy and TAG phosphor. The TAG phosphor converts the blue emission partially to yellow, which mixes with the remaining blue to produce white.

Preconditioned according to JEDEC Level 2a standards, the PLCC-2 package is Pb-free and RoHS-compliant. CECC compatibility with infrared, vapor phase and wave solder processesas well as automatic placement equipment and IR reflow solderingsimplifies handling and automatic assembly. The VLMW41xx devices are qualified according to AEC Q101.

Available in 8mm tape, samples and production quantities of the VLMW41XX high-intensity SMD LEDs are available today, with lead times of five weeks for larger orders.




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