14 April 2015

Vishay adds high-speed 940nm IR emitters in leaded and SMD packages with radiant intensity up to 600mW/sr

Vishay Intertechnology Inc of Malvern, PA, USA has broadened its optoelectronics portfolio by launching high-speed 940nm infrared (IR) emitters in leaded and SMD packages. Fabricated using the firm's SurfLight surface-emitter chip technology, the Vishay Semiconductors devices provide up to five times greater radiant intensity than standard IR emitters, reducing component count, improving performance, and lowering solution costs, it is reckoned, in a wide range of IR illumination, data transmission, and gesture recognition applications.

The new devices include one leaded 5mm IR emitter with a parabolic lens, and eight SMD devices in 0805, PLCC-2, top-looking, and side-looking packages. Unlike standard IR emitters that emit light in all directions, SurfLight devices emit nearly all the light and power out of the top of the chip. With most of the light concentrated on the surface, higher intensity is achieved; up to 600mW/sr for the leaded emitter and from 10-120mW/sr for the SMD devices.

The SurfLight emitters combine high brightness with narrow angles of half intensity of ±3° for the leaded device and ±9° to ±60° for SMD devices. With a wavelength of 940nm and narrow spectral bandwidth, the emitters guarantee invisible infrared radiation for CMOS cameras in CCTV and night-vision systems, gaming, smoke detectors, light curtains, proximity sensors, and IR touch panels, says Vishay. For automotive applications, the SMD VSMY1940X01 and VSMY3940X01 are AEC-Q101 qualified.

The IR emitters offer fast rise and fall times of 10ns, low forward voltages down to 1.32V at 20mA, and radiant power to 55mW. Top-looking devices are package matched with Vishay's VEMD2000X01 and VEMD2503X01 series detectors, while side-looking devices are matched with the VEMD2xx3SLX01 and VEMT2xx3SLX01.

The new devices are suitable for high-pulse-current operation, offer a floor life up to four weeks, and moisture sensitivity levels of 2a and 3 in accordance with J-STD-020. Supporting lead (Pb)-free reflow soldering, the devices are RoHS-compliant, halogen-free, and Vishay GREEN.

Samples and production quantities are available now, with lead times of 8-16 weeks for larger orders.

Tags: Vishay AlGaAs IR emitter

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