WL-SMTW SMD TOP LEDs The WL-SMTW series of single and multi-colour SMD 3528 TOP LEDs are housed in standard PLCC packages and have water-clear lenses with a wide 120° viewing angle. They offer high reliability and have low energy consumption with high efficiency, and they produce no UV or IR radiation. Typical applications include backlighting for LCDs and indicators, switches and symbol illumination and decorative lighting. Three types are available in a standard PLCC 3.5x2.8mm package: WL-SMTW series Single colour series, PLCC-2