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Optoelectronics/Displays??

IR emitters feature 520mW optical power at 1A

Posted: 16 Nov 2011 ?? ?Print Version ?Bookmark and Share

Keywords:infrared emitter? optoelectronics component? surface emitter technology?

Vishay Intertechnology Inc. has expanded its line of optoelectronics components with two 850nm infrared (IR) emitters based on the company's SurfLight surface emitter technology. The VSMY7850X01 emitter has a 42 mil chip and is designed for high drive currents up to 1A and pulses to 5A, while the VSMY7852X01 has a 20 mil chip for high drive currents up to 250mA and pulses to 1.5A.

The company boasts the devices' low thermal resistivity of 10K/W for the VSMY7850X01 and 15K/W for the VSMY7852X01 that enables the maximum current to be used over almost the entire operating temperature range of -40C to 100C.

VSMY7852X01, VSMY7850X01

The surface emitters boast intensity up to 170mW/sr.


Vishay's SurfLight surface emitter technology uses a unique die construction in which all the light generated inside the semiconductor is emitted through the top surface of the chip. The result is an intensity of 170mW/sr, optical power of 520mW at 1A and low forward voltage of 2V for the VSMY7850X01; and intensity of 42mW/sr, optical power of 130mW at 250mA and forward voltage of 1.8V for the VSMY7852X01. The devices are AEC-Q101 qualified and feature a 60 angle of half intensity.

According to Vishay, the emitters can replace multiple standard SMD devices, allowing designers to reduce the component count and improve performance in many applications. The VSMY7852X01 and VSMY7850X01 are optimized for IR illumination in CMOS cameras, driver assistance systems, 3D TV and 3D imaging, night vision and IR flash applications. The emitters' 15ns switching time make them ideal for machine vision IR data transmission, added the company.

Offered in high-power Little Star package with 6 x 7 x 1.5mm footprint, the VSMY7852X01 and VSMY7850X01 offer exceptionally high current drives, radiant intensity and optical power, while providing low thermal resistivity, claimed Vishay. Samples and production quantities of the devices are available now with lead times of 10-12 weeks for larger orders.





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