High-Power, High-Speed 850-nm Infrared Emitters from Vishay

The four emitters released today are optimized for infrared illumination for CMOS and CCD cameras used in closed-circuit television (CCTV) security applications; high-speed infrared data transmission in home entertainment surround-sound systems, museums, and concert halls; and for particle detection in smoke detectors.

For security camera illumination, the emitters' high radiant intensity of 230mW/sr at 100mA for the ±10° devices and 90mW/sr at 100mA for the ±18° devices provide longer illumination distance and greater resolution. In addition, the emitters show the lowest degradation over time. Where some competing emitters degrade up to 60% in one year, Vishay's emitter intensity remains virtually unchanged.

For high-modulation operation, the new emitters feature switching times of 20ns, supporting data transmission rates up to 16Mbit/sec. For smoke detectors, the higher radiant intensity of the ±10° devices allows for lower current operation to extend battery life.

While many emitters are only suitable for 50-mA operation, Vishay's TSHG5x10 and TSHG6x10 devices comfortably provide 55-mW optical power at 100mA. The emitters offer high power output, with a forward voltage of 2.3V at 1A and 1.5V at 100mA. To control the height of the emitter when inserted into the PCB for soldering, the TSHG5x10 devices feature a standoff. The devices are lead (Pb) free in accordance with WEEE 2002/96/EC and RoHS 2002/95/EC.