Date: 15/01/2009

3-mm size, 940-nm infrared emitter with optical power of 40 mW

Vishay Intertechnology launched a 3-mm (T1) infrared emitter with performance characteristics comparable to leading 5-mm emitters. The new VSLB3940 940-nm infrared emitter features an on-axis radiant intensity of 65 mW/sr and optical power of 40 mW at 100 mA - which represents about an 8 % performance improvement over the larger, 5-mm TSAL6200 in a 40 % smaller form factor.

Some of the other features include:

1. High-speed emitter with switching times of 15 ns
2. It can support data rates up to 30 Mbit/s.
3. It features an angle of half intensity of ±22°
4. A forward voltage of 1.35 V at 100 mA
5. The small size makes it useful for the compact infrared remote control units used with digital cameras, notebook PCs, and MP3/video players.
6. Can also be used for wireless communication, optical counters, card readers, and light barrier or interrupter applications.

Availability: Samples and production quantities of the VSLB3940 IR emitter are
available now, with lead times of four to six weeks for large orders.