High-speed 940nm infrared emitter
04 February 2009
A 3mm (T1) infrared emitter performs comparably to 5mm emitters.
The new VSLB3940 940nm infrared emitter from Vishay Intertechnology features an on-axis radiant intensity of 65mW/sr and optical power of 40mW at 100 mA, which represents an 8% performance improvement over the larger, 5mm TSAL6200 in a 40% smaller form factor.
The size of the VSLB3940 makes it suitable for the compact infrared (IR) remote control units used with digital cameras, notebook PCs, and MP3/video players. The VSLB3940 is a high-speed emitter with switching times of 15ns. It can support data rates up to 30Mbit/s and features an angle of half intensity of ±22° and a forward voltage of 1.35V at 100mA. In addition to remote control applications, the VSLB3940 can be used for wireless communication, optical counters, card readers, and light barrier or interrupter applications.
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