Vishay expands color binning, ordering options for certain white LEDs
Design engineers need very uniform color temperature when designing with white LEDs. Each LED should be nearly identical in color and intensity. By offering more narrow color bins and allowing customers to order four adjacent color groups, Vishay’s VLMW41XX series enables designers to eliminate color differences in applications including backlighting in automotive dashboards and switches; indicators and backlighting in telecommunications systems, audio and video equipment, white goods, and office equipment; and flat backlighting for LCDs, switches, and symbols in general use.
Built on a highly efficient InGaN technology, the devices offer a ±60° angle of half-intensity, an extremely high luminous intensity ranging from 180 mcd to 450 mcd, and a typical color temperature of 5500 K, cool white. The VLMW41xx devices are qualified according to AEC-Q101 for automotive applications. They have a moisture sensitivity level of 2a resulting in a floor life of four weeks, well beyond the typical PLCC-2 rating and one less worry for manufacturers.
The package for the 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. The LEDs feature an ESD-withstand voltage up to 2 kV, in accordance with JESD22-A114-B, and are lead (Pb)-free and RoHS compliant.
Available in 8 mm tape, samples of the VLMW41XX high-intensity SMD LEDs are available now. Production quantities are available now, with lead times of six to eight weeks for larger orders.
For more information, visit SMD LEDs.
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