Surface mount white LED devices for LED lighting

Surface mount white LED devices for LED lighting

Recently, Vishay Intertechnology, Inc. announced the launch of two new surface mount white light LEDs in two package versions --- VLMW321xx LED and VLMW322xx LED. In order to maintain a wide range of pin compatibility with similar devices, the VLMW321xx LED provides 3 anodes and 1 cathode, and the VLMW322xx LED provides 3 cathodes and 1 anode.

These devices are packaged in PLCC-4, and the optimized lead frame reduces thermal resistance to 300K/W, and the power dissipation is up to 200mW, which enables the device to use up to 50mA of drive current, making the brightness twice that of Vishay's high-brightness SMD LEDs in PLCC-2 packages. VLMW321xx and VLMW322xx LEDs have passed the AEC-Q101 automotive standard and can be used in automotive applications. The device is cast in silicone resin to extend its service life.

These high-brightness LEDs can be used for traffic lights and indicators; indoor and outdoor lighting; in-vehicle and exterior lighting; indicator lights and backlights for home appliances, toys and game consoles, and mobile phones; camera flashes; and general lighting for retail and window displays, emergency lighting and signage, and lighting for museums and showrooms.

VLMW321xx and VLMW322xx use high-efficiency InGaN technology, with a luminous intensity of 1400mcd to 3550mcd and a luminous flux of 7000mlm to 8900mlm. The half-intensity angle of these LEDs is 60°, the luminous intensity ratio of each packaging unit is less than 1.6, and the individual packaging units are classified according to the luminous intensity and color.

These lead-free and RoHS-compliant devices are packaged in 8mm tape and reel and can be soldered using infrared reflow, vapor phase and wave soldering processes in accordance with CECC 00802 and J-STD-020, and are preconditioned according to JEDEC Level 2a. These LEDs can withstand ESD voltages up to 2kV (HBM) in accordance with JESD22-A114-B.