Malvern, Pa. Targeting CMOS camera applications, automotive night vision and sensor systems, Vishay Intertechnology's two new infrared (IR) emitters are optimized with an 850-nm wavelength in comparison with industry standard 870-nm emitters to improve optical efficiency in these types of applications. Both high-speed, high-radiant power devices provide a low 1.8-volt maximum forward voltage and a 20 nanosecond rise time.
Typical applications include night vision systems and seat occupant sensors in vehicles, for which the 850-nm emitters offer the additional advantage of a low aging rate enabled by GaAlAs double hetero technology, said the company.
The new TSHG6200 device, housed in the leaded T 1-3/4 package, is designed for applications where maximum radiant power and intensity are required. The emitter offers a radiant intensity of 180 mW/sr at a forward current of 100 mA, and provides a ±10° angle of half intensity.
For applications that call for a wider angle of intensity, the surface-mount TSMG3700 emitter, available in a miniature PLCC-2 SMD package, combines a ±60° angle of half intensity with a radiant intensity of 10 mW/sr. It's easily mounted to PC-boards using automatic placement equipment, said the company. Both devices are lead-free.
Samples of the new emitters are available now. Production quantities will be available in third quarter with lead times of 12 weeks for large orders. Pricing for U.S. is $39.50 per 100 pieces for the TSHG6200 and $21.50 per 100 pieces for the TSMG3700, in quantities of 50,000.
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