Vishay – New 850nm infrared emitters feature novel surface emitter (VSMY7852X01)

With the release of two new 850nm infrared (IR) emitters, built on its SurfLight surface-emitter technology, Vishay has broadened its optoelectronics portfolio. Offered in the high-power Little Star package with a 6mm by 7mm by 1.5mm footprint, the VSMY7852X01 and VSMY7850X01 offer exceptionally high-current drives, radiant intensity, and optical power, while providing low thermal resistivity.

The VSMY7850X01 emitter contains a 42 mil chip and is designed for high drive currents up to 1A and pulses to 5A, while the VSMY7852X01 features a 20 mil chip for high drive currents up to 250mA and pulses to 1.5A. Due to the devices’ low thermal resistivity of 10 K/W for the VSMY7850X01 and 15K/W for the VSMY7852X01, the maximum current can be employed over almost the entire operating temperature range of -40C to +100C.

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 ultra-high radiant intensity of 170mW/sr and high optical power of 520mW at 1A with a low forward voltage of 2V for the VSMY7850X01, and intensity of 42mW/sr and optical power of 130mW at 250mA with a low forward voltage of 1.8V for the VSMY7852X01. The devices released today are AEC-Q101 qualified and feature a ±60 degree angle of half intensity.

With their extremely high current operation, the emitters can replace multiple standard SMD devices, allowing designers to reduce the component count and improve performance in a wide variety of 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’ fast switching times of 15ns make them ideal for machine vision IR data transmission, says the company.