Infrared Emitters Boost Intensity By Up To 43% March 2005 Issue Published Date: March 09, 2005
A series of infrared emitters produce up to 43% greater radiant intensity than previous generation devices. All operate at an 870-nm peak wavelength and are specified for a forward voltage of 1.5V. The TSFF5210 delivers the highest intensity at 180 mW/sr with a ±10° angle of half intensity. The TSFF5410 has typical radiant intensity of 70 mW/sr, but a greater angle of half intensity, ±22°. Both emitters are housed in the 5-mm T-1 round plastic package. For applications requiring space saving surface mount devices, the TSMF4710 and TSMF3710 come in the miniature PLCC-2 SMD package. Both offer radiant intensities of 10 mW/sr and a ±60° half angle intensity but are rated for different rise and fall times. Pricing per 100 pieces in quantities of 50,000 pieces is $37.50 for the TSFF5410, $38.50 for the TSFF5210, $20.80 for the TSMF4710 and $18.80 for the TSMF3710. VISHAY INTERTECHNOLOGY INC., Malvern, PA. (619) 336-0680.
