Vishay TSFF Series IR Emitting DiodesThe TSFF family, from Vishay Semiconductors, are high speed Infrared IR emitting diodes. With a peak wavelength of 870nm, these IREDs use double hetero DH technology. Suitable applications for the TSFF family of IREDs includes; IR video data transmission, free air data transmission and smoke automatic fire detectors. Features of the TSFF family of IR emitting diodes: T-1 3/4 5mm through-hole packages High reliability High radiant power High radiant intensity Low forward voltage Peak wavelength: 870nm ### 红外线 IR 发射器，Vishay
The is a 870nm Infrared Emitting Diode in GaAlAs double hetero DH technology. It is moulded in a clear, untinted plastic package.