desc-ription the tps 535 thermopile sensor in a to 5 type housing employs a chip of 1.2 x 1.2 mm2 absorber size and a 30 k thermistor as temperature reference. the square window opening is equipped with a 5.5 m longpass (standard) infrared filter. the sensor shows a flat sensitivity characteristic over the wavelength. the tps 535 can also be equipped with infrared bandpass filters for ndir gas detection.
features large absorber size - high signal output low temperature coefficient of sensitivity applications: ear thermometer, gas detectors (with additional infrared bandpass filter)