Vishay IR Emitters Reduce Component Count and Cost
Vishay Intertechnology has today released new high-speed 940nm infrared (IR) emitters in leaded and SMD packages. The 940nm IR emitters offer fast rise and fall times of 10ns, low forward voltages down to 1.32V at 20mA, and radiant power to 55mW, according to the company.
Built on Vishay's SurfLight surface emitter chip technology, the devices are said to provide up to five times greater radiant intensity than standard IR emitters, reducing component counts, improving performance, and lowering solution costs in a wide range of infrared illumination, data transmission, and gesture recognition applications.
The devices released today 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, Vishay's 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 an exceptionally high 600mW/sr for the leaded emitter and from 10mW/sr to 120mW/sr for the SMD device.
The SurfLight emitters combine their high brightness with narrow angles of half intensity of ±3 degrees for the leaded device and ±9 degrees to ±60 degrees for SMD devices. With their 940nm wavelength 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.
For automotive applications, the SMD VSMY1940X01 and VSMY3940X01 are AEC-Q101-qualified.
Samples and production quantities of the new IR emitters are available now, with lead times of eight to 16 weeks for larger orders.
