Infrared emitting diodes offer powerful illumination in low-profile SMD package

Vishay is broadening its optoelectronics portfolio with the introduction of two new SurfLight high-speed infrared (IR) emitting diodes in compact 3.2mm by 1.6mm by 1.1mm surface-mount, top-view packages. Based on proprietary GaAIAs surface emitter chip technology, the 850nm VSMY12850 and 940nm VSMY12940 combine high radiant intensity and optical power with fast switching times. The IR emitters are offered in clear un-tinted PCB-based packages with inner lenses for surface mounting. Offering lower profiles than devices with dome lenses or PLCC-2 packages, the VSMY12850 and VSMY12940 provide powerful IR illumination in space- constrained end products. When used with Vishay's VCNL sensor family, the emitters are optimized for proximity and gesture applications, wake-up functions, optical switches, and photo-interruptors and IR emitters for 3D gaming units and IR touch panels. The VSMY12850 and VSMY12940 offer extremely high radiant intensity to 16mW/sr at a low 70mA driving current, fast switching times of 10 ns, and forward voltage of 1.6V. Suitable for high pulse current operation to 1A at 100µs, the devices feature a ±40 degree angle of half intensity and operate over a temperature range of -40C to +85C. The IR emitters provide a moisture sensitivity level (MSL) of three in accordance with J-STD-020 for a shelf life of 168 hours. The devices are RoHS-compliant and halogen-free, says the company.